22111012012 has 48 divisors (see below), whose sum is σ = 40549662720. Its totient is φ = 10536926400.

The previous prime is 22111011977. The next prime is 22111012019. The reversal of 22111012012 is 21021011122.

It is a junction number, because it is equal to n+sod(n) for n = 22111011983 and 22111012001.

It is not an unprimeable number, because it can be changed into a prime (22111012019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4219458 + ... + 4224694.

It is an arithmetic number, because the mean of its divisors is an integer number (844784640).

Almost surely, 2^22111012012 is an apocalyptic number.

It is an amenable number.

22111012012 is a deficient number, since it is larger than the sum of its proper divisors (18438650708).

22111012012 is a wasteful number, since it uses less digits than its factorization.

22111012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5782 (or 5780 counting only the distinct ones).

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

Adding to 22111012012 its reverse (21021011122), we get a palindrome (43132023134).

The spelling of 22111012012 in words is "twenty-two billion, one hundred eleven million, twelve thousand, twelve".