120021112203221 has 16 divisors (see below), whose sum is σ = 125698461907968. Its totient is φ = 114382102665600.

The previous prime is 120021112203217. The next prime is 120021112203329. The reversal of 120021112203221 is 122302211120021.

It is a cyclic number.

It is not a de Polignac number, because 120021112203221 - 2² = 120021112203217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021112203193 and 120021112203202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021112233221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60165020 + ... + 62127866.

It is an arithmetic number, because the mean of its divisors is an integer number (7856153869248).

Almost surely, 2^{120021112203221} is an apocalyptic number.

It is an amenable number.

120021112203221 is a deficient number, since it is larger than the sum of its proper divisors (5677349704747).

120021112203221 is a wasteful number, since it uses less digits than its factorization.

120021112203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972612.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 120021112203221 its reverse (122302211120021), we get a palindrome (242323323323242).

The spelling of 120021112203221 in words is "one hundred twenty trillion, twenty-one billion, one hundred twelve million, two hundred three thousand, two hundred twenty-one".