22012011012 has 24 divisors (see below), whose sum is σ = 51389461312. Its totient is φ = 7333322400.

The previous prime is 22012010989. The next prime is 22012011013. The reversal of 22012011012 is 21011021022.

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 (22012011013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478939 + ... + 522882.

Almost surely, 2^22012011012 is an apocalyptic number.

It is an amenable number.

22012011012 is an abundant number, since it is smaller than the sum of its proper divisors (29377450300).

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

22012011012 is a wasteful number, since it uses less digits than its factorization.

22012011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003659 (or 1003657 counting only the distinct ones).

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

Adding to 22012011012 its reverse (21011021022), we get a palindrome (43023032034).

It can be divided in two parts, 220120 and 11012, that added together give a palindrome (231132).

The spelling of 22012011012 in words is "twenty-two billion, twelve million, eleven thousand, twelve".