22201021021122 has 48 divisors (see below), whose sum is σ = 48170034700632. Its totient is φ = 7389907983360.

The previous prime is 22201021021117. The next prime is 22201021021159. The reversal of 22201021021122 is 22112012010222.

It is a happy number.

22201021021122 is a `hidden beast` number, since 2 + 220 + 1 + 0 + 210 + 211 + 22 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20155260070521 + 2045760950601 = 4489461^2 + 1430301^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22201021021095 and 22201021021104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154126398 + ... + 154270374.

Almost surely, 2^{22201021021122} is an apocalyptic number.

22201021021122 is an abundant number, since it is smaller than the sum of its proper divisors (25969013679510).

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

22201021021122 is a wasteful number, since it uses less digits than its factorization.

22201021021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156003 (or 156000 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22201021021122 its reverse (22112012010222), we get a palindrome (44313033031344).

The spelling of 22201021021122 in words is "twenty-two trillion, two hundred one billion, twenty-one million, twenty-one thousand, one hundred twenty-two".