22111011212 has 6 divisors (see below), whose sum is σ = 38694269628. Its totient is φ = 11055505604.

The previous prime is 22111011163. The next prime is 22111011233. The reversal of 22111011212 is 21211011122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2763876398 + ... + 2763876405.

It is an arithmetic number, because the mean of its divisors is an integer number (6449044938).

Almost surely, 2^22111011212 is an apocalyptic number.

It is an amenable number.

22111011212 is a deficient number, since it is larger than the sum of its proper divisors (16583258416).

22111011212 is a wasteful number, since it uses less digits than its factorization.

22111011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5527752807 (or 5527752805 counting only the distinct ones).

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

Adding to 22111011212 its reverse (21211011122), we get a palindrome (43322022334).

The spelling of 22111011212 in words is "twenty-two billion, one hundred eleven million, eleven thousand, two hundred twelve".