121021220010122 has 16 divisors (see below), whose sum is σ = 185245503385032. Its totient is φ = 59276281159680.

The previous prime is 121021220010113. The next prime is 121021220010161. The reversal of 121021220010122 is 221010022120121.

It can be written as a sum of positive squares in 4 ways, for example, as 117335668601281 + 3685551408841 = 10832159^2 + 1919779^2 .

It is a super-2 number, since 2×121021220010122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121021220010122.

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, 890501183 + ... + 890637074.

Almost surely, 2^{121021220010122} is an apocalyptic number.

121021220010122 is a deficient number, since it is larger than the sum of its proper divisors (64224283374910).

121021220010122 is a wasteful number, since it uses less digits than its factorization.

121021220010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781138953.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121021220010122 its reverse (221010022120121), we get a palindrome (342031242130243).

The spelling of 121021220010122 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred twenty million, ten thousand, one hundred twenty-two".