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2212122212121 = 36071214784301
BaseRepresentation
bin100000001100001100110…
…000100011011100011001
321211110212121012201022210
4200030030300203130121
5242220411241241441
64412122424105333
7315551310362253
oct40141460433431
97743777181283
102212122212121
11783179356408
122b8883305249
131307aa137b13
14790d28c2cd3
153c8207b3616
hex2030cc23719

2212122212121 has 8 divisors (see below), whose sum is σ = 2954355422464. Its totient is φ = 1472318571600.

The previous prime is 2212122212117. The next prime is 2212122212123. The reversal of 2212122212121 is 1212122212122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2212122212121 - 22 = 2212122212117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212122212123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607390330 + ... + 607393971.

It is an arithmetic number, because the mean of its divisors is an integer number (369294427808).

Almost surely, 22212122212121 is an apocalyptic number.

It is an amenable number.

2212122212121 is a deficient number, since it is larger than the sum of its proper divisors (742233210343).

2212122212121 is a wasteful number, since it uses less digits than its factorization.

2212122212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214784911.

The product of its digits is 256, while the sum is 21.

Adding to 2212122212121 its reverse (1212122212122), we get a palindrome (3424244424243).

Subtracting from 2212122212121 its reverse (1212122212122), we obtain a palindrome (999999999999).

The spelling of 2212122212121 in words is "two trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty-one".

Divisors: 1 3 607 1821 1214784301 3644352903 737374070707 2212122212121