22101111212 has 12 divisors (see below), whose sum is σ = 38678241336. Its totient is φ = 11050185120.

The previous prime is 22101111211. The next prime is 22101111251. The reversal of 22101111212 is 21211110122.

It is not an unprimeable number, because it can be changed into a prime (22101111211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75512 + ... + 223392.

It is an arithmetic number, because the mean of its divisors is an integer number (3223186778).

Almost surely, 2^22101111212 is an apocalyptic number.

It is an amenable number.

22101111212 is a deficient number, since it is larger than the sum of its proper divisors (16577130124).

22101111212 is a wasteful number, since it uses less digits than its factorization.

22101111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185248 (or 185246 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22101111212 its reverse (21211110122), we get a palindrome (43312221334).

The spelling of 22101111212 in words is "twenty-two billion, one hundred one million, one hundred eleven thousand, two hundred twelve".