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2212112112020 = 225711557825431
BaseRepresentation
bin100000001100001100001…
…010000001100110010100
321211110211220012120120222
4200030030022001212110
5242220401200041040
64412121423413512
7315551125465016
oct40141412014624
97743756176528
102212112112020
11783173688018
122b887ba54298
131307a800c825
14790d14141b6
153c81e96abb5
hex2030c281994

2212112112020 has 24 divisors (see below), whose sum is σ = 4710864106368. Its totient is φ = 872382240800.

The previous prime is 2212112111999. The next prime is 2212112112061. The reversal of 2212112112020 is 202112112122.

It is a super-2 number, since 2×22121121120202 (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2212112112020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778911296 + ... + 778914135.

It is an arithmetic number, because the mean of its divisors is an integer number (196286004432).

Almost surely, 22212112112020 is an apocalyptic number.

2212112112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212112112020 is an abundant number, since it is smaller than the sum of its proper divisors (2498751994348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2212112112020 is a wasteful number, since it uses less digits than its factorization.

2212112112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557825511 (or 1557825509 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2212112112020 its reverse (202112112122), we get a palindrome (2414224224142).

The spelling of 2212112112020 in words is "two trillion, two hundred twelve billion, one hundred twelve million, one hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 71 142 284 355 710 1420 1557825431 3115650862 6231301724 7789127155 15578254310 31156508620 110605605601 221211211202 442422422404 553028028005 1106056056010 2212112112020