202101120021220 has 48 divisors (see below), whose sum is σ = 487504833742080. Its totient is φ = 68940077480064.

The previous prime is 202101120021209. The next prime is 202101120021253. The reversal of 202101120021220 is 22120021101202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202101120021194 and 202101120021203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3663879600 + ... + 3663934759.

It is an arithmetic number, because the mean of its divisors is an integer number (10156350702960).

Almost surely, 2^{202101120021220} is an apocalyptic number.

202101120021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202101120021220 is an abundant number, since it is smaller than the sum of its proper divisors (285403713720860).

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

202101120021220 is a wasteful number, since it uses less digits than its factorization.

202101120021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7327814572 (or 7327814570 counting only the distinct ones).

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

Adding to 202101120021220 its reverse (22120021101202), we get a palindrome (224221141122422).

The spelling of 202101120021220 in words is "two hundred two trillion, one hundred one billion, one hundred twenty million, twenty-one thousand, two hundred twenty".