20221210222112 has 24 divisors (see below), whose sum is σ = 39812288751900. Its totient is φ = 10110152761344.

The previous prime is 20221210222111. The next prime is 20221210222133. The reversal of 20221210222112 is 21122201212202.

It can be written as a sum of positive squares in 2 ways, for example, as 18902286600976 + 1318923621136 = 4347676^2 + 1148444^2 .

It is not an unprimeable number, because it can be changed into a prime (20221210222111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13408937 + ... + 14840552.

Almost surely, 2^{20221210222112} is an apocalyptic number.

It is an amenable number.

20221210222112 is a deficient number, since it is larger than the sum of its proper divisors (19591078529788).

20221210222112 is a wasteful number, since it uses less digits than its factorization.

20221210222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28271868 (or 28271860 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20221210222112 its reverse (21122201212202), we get a palindrome (41343411434314).

The spelling of 20221210222112 in words is "twenty trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, one hundred twelve".