22011211012 has 18 divisors (see below), whose sum is σ = 44808537102. Its totient is φ = 9433376064.

The previous prime is 22011211009. The next prime is 22011211097. The reversal of 22011211012 is 21011211022.

It can be written as a sum of positive squares in only one way, i.e., 21860805316 + 150405696 = 147854^2 + 12264^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22011210983 and 22011211001.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56150853 + ... + 56151244.

Almost surely, 2^22011211012 is an apocalyptic number.

It is an amenable number.

22011211012 is an abundant number, since it is smaller than the sum of its proper divisors (22797326090).

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

22011211012 is a wasteful number, since it uses less digits than its factorization.

22011211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112302115 (or 112302106 counting only the distinct ones).

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

Adding to 22011211012 its reverse (21011211022), we get a palindrome (43022422034).

The spelling of 22011211012 in words is "twenty-two billion, eleven million, two hundred eleven thousand, twelve".