22021131112 has 8 divisors (see below), whose sum is σ = 41289620850. Its totient is φ = 11010565552.

The previous prime is 22021131103. The next prime is 22021131137. The reversal of 22021131112 is 21113112022.

It can be written as a sum of positive squares in only one way, i.e., 11821343076 + 10199788036 = 108726^2 + 100994^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1376320687 + ... + 1376320702.

Almost surely, 2^22021131112 is an apocalyptic number.

It is an amenable number.

22021131112 is a deficient number, since it is larger than the sum of its proper divisors (19268489738).

22021131112 is a wasteful number, since it uses less digits than its factorization.

22021131112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752641395 (or 2752641391 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22021131112 its reverse (21113112022), we get a palindrome (43134243134).

The spelling of 22021131112 in words is "twenty-two billion, twenty-one million, one hundred thirty-one thousand, one hundred twelve".