202110221020120 has 128 divisors (see below), whose sum is σ = 520023500236800. Its totient is φ = 69253411161600.

The previous prime is 202110221020117. The next prime is 202110221020121. The reversal of 202110221020120 is 21020122011202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202110221020094 and 202110221020103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110221020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3677445201 + ... + 3677500159.

It is an arithmetic number, because the mean of its divisors is an integer number (4062683595600).

Almost surely, 2^{202110221020120} is an apocalyptic number.

202110221020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202110221020120 is an abundant number, since it is smaller than the sum of its proper divisors (317913279216680).

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

202110221020120 is a wasteful number, since it uses less digits than its factorization.

202110221020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62609 (or 62605 counting only the distinct ones).

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

Adding to 202110221020120 its reverse (21020122011202), we get a palindrome (223130343031322).

The spelling of 202110221020120 in words is "two hundred two trillion, one hundred ten billion, two hundred twenty-one million, twenty thousand, one hundred twenty".