220021202121122 has 16 divisors (see below), whose sum is σ = 338129267481432. Its totient is φ = 107312206740480.

The previous prime is 220021202121079. The next prime is 220021202121143. The reversal of 220021202121122 is 221121202120022.

It can be written as a sum of positive squares in 4 ways, for example, as 220020291952561 + 910168561 = 14833081^2 + 30169^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220021202121094 and 220021202121103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189529403 + ... + 190686750.

Almost surely, 2^{220021202121122} is an apocalyptic number.

220021202121122 is a deficient number, since it is larger than the sum of its proper divisors (118108065360310).

220021202121122 is a wasteful number, since it uses less digits than its factorization.

220021202121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380223253.

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

Adding to 220021202121122 its reverse (221121202120022), we get a palindrome (441142404241144).

The spelling of 220021202121122 in words is "two hundred twenty trillion, twenty-one billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty-two".