20210120222120 has 32 divisors (see below), whose sum is σ = 45474519846600. Its totient is φ = 8083737093888.

The previous prime is 20210120222087. The next prime is 20210120222141. The reversal of 20210120222120 is 2122202101202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12411092151844 + 7799028070276 = 3522938^2 + 2792674^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8664419 + ... + 10746738.

Almost surely, 2^{20210120222120} is an apocalyptic number.

20210120222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210120222120 is an abundant number, since it is smaller than the sum of its proper divisors (25264399624480).

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

20210120222120 is a wasteful number, since it uses less digits than its factorization.

20210120222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19437197 (or 19437193 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20210120222120 its reverse (2122202101202), we get a palindrome (22332322323322).

The spelling of 20210120222120 in words is "twenty trillion, two hundred ten billion, one hundred twenty million, two hundred twenty-two thousand, one hundred twenty".