220120021200121 has 32 divisors (see below), whose sum is σ = 258169798656000. Its totient is φ = 183738075131520.

The previous prime is 220120021200113. The next prime is 220120021200143. The reversal of 220120021200121 is 121002120021022.

It is a happy number.

It is not a de Polignac number, because 220120021200121 - 2³ = 220120021200113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220120021200095 and 220120021200104.

It is not an unprimeable number, because it can be changed into a prime (220120021200161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1210004656 + ... + 1210186558.

It is an arithmetic number, because the mean of its divisors is an integer number (8067806208000).

Almost surely, 2^{220120021200121} is an apocalyptic number.

It is an amenable number.

220120021200121 is a deficient number, since it is larger than the sum of its proper divisors (38049777455879).

220120021200121 is a wasteful number, since it uses less digits than its factorization.

220120021200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189589.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220120021200121 its reverse (121002120021022), we get a palindrome (341122141221143).

The spelling of 220120021200121 in words is "two hundred twenty trillion, one hundred twenty billion, twenty-one million, two hundred thousand, one hundred twenty-one".