22211100012 has 96 divisors (see below), whose sum is σ = 53825587200. Its totient is φ = 7124032512.

The previous prime is 22211099993. The next prime is 22211100017. The reversal of 22211100012 is 21000111222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (22211100017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16838689 + ... + 16840007.

It is an arithmetic number, because the mean of its divisors is an integer number (560683200).

Almost surely, 2^22211100012 is an apocalyptic number.

It is an amenable number.

22211100012 is an abundant number, since it is smaller than the sum of its proper divisors (31614487188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22211100012 is a wasteful number, since it uses less digits than its factorization.

22211100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855 (or 1853 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22211100012 its reverse (21000111222), we get a palindrome (43211211234).

The spelling of 22211100012 in words is "twenty-two billion, two hundred eleven million, one hundred thousand, twelve".