22112100121111 has 64 divisors (see below), whose sum is σ = 30172553349120. Its totient is φ = 15740828513280.

The previous prime is 22112100121073. The next prime is 22112100121171. The reversal of 22112100121111 is 11112100121122.

It is not a de Polignac number, because 22112100121111 - 2¹³ = 22112100112919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112100121171) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15735630 + ... + 17083156.

It is an arithmetic number, because the mean of its divisors is an integer number (471446146080).

Almost surely, 2^{22112100121111} is an apocalyptic number.

22112100121111 is a deficient number, since it is larger than the sum of its proper divisors (8060453228009).

22112100121111 is a wasteful number, since it uses less digits than its factorization.

22112100121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347681 (or 1347655 counting only the distinct ones).

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

Adding to 22112100121111 its reverse (11112100121122), we get a palindrome (33224200242233).

The spelling of 22112100121111 in words is "twenty-two trillion, one hundred twelve billion, one hundred million, one hundred twenty-one thousand, one hundred eleven".