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2112212011 = 71323211121
BaseRepresentation
bin111110111100101…
…1100110000101011
312110012111111011111
41331321130300223
513311211241021
6545332011151
7103225335340
oct17571346053
95405444144
102112212011
1199431a168
124ab460ab7
132787a54c0
141607487c7
15c567a8e1
hex7de5cc2b

2112212011 has 8 divisors (see below), whose sum is σ = 2599645664. Its totient is φ = 1671200640.

The previous prime is 2112211967. The next prime is 2112212029. The reversal of 2112212011 is 1102122112.

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

It is a cyclic number.

It is not a de Polignac number, because 2112212011 - 211 = 2112209963 is a prime.

It is a super-2 number, since 2×21122120112 = 8922879158825328242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 2112211982 and 2112212000.

It is not an unprimeable number, because it can be changed into a prime (2112212411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11605470 + ... + 11605651.

It is an arithmetic number, because the mean of its divisors is an integer number (324955708).

Almost surely, 22112212011 is an apocalyptic number.

2112212011 is a deficient number, since it is larger than the sum of its proper divisors (487433653).

2112212011 is a wasteful number, since it uses less digits than its factorization.

2112212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23211141.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2112212011 is about 45958.8077630393. The cubic root of 2112212011 is about 1283.0566619104.

Adding to 2112212011 its reverse (1102122112), we get a palindrome (3214334123).

It can be divided in two parts, 21122 and 12011, that added together give a palindrome (33133).

The spelling of 2112212011 in words is "two billion, one hundred twelve million, two hundred twelve thousand, eleven".

Divisors: 1 7 13 91 23211121 162477847 301744573 2112212011