202021210021120 has 72 divisors (see below), whose sum is σ = 553033062457344. Its totient is φ = 69264414861312.

The previous prime is 202021210021009. The next prime is 202021210021153. The reversal of 202021210021120 is 21120012120202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 202021210021094 and 202021210021103.

It is a congruent number.

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, 11273496064 + ... + 11273513983.

It is an arithmetic number, because the mean of its divisors is an integer number (7681014756352).

Almost surely, 2^{202021210021120} is an apocalyptic number.

202021210021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202021210021120 is an abundant number, since it is smaller than the sum of its proper divisors (351011852436224).

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

202021210021120 is an equidigital number, since it uses as much as digits as its factorization.

202021210021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22547010075 (or 22547010061 counting only the distinct ones).

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

Adding to 202021210021120 its reverse (21120012120202), we get a palindrome (223141222141322).

The spelling of 202021210021120 in words is "two hundred two trillion, twenty-one billion, two hundred ten million, twenty-one thousand, one hundred twenty".