202101202120220 has 48 divisors (see below), whose sum is σ = 457144082300640. Its totient is φ = 74608196103936.

The previous prime is 202101202120201. The next prime is 202101202120261. The reversal of 202101202120220 is 22021202101202.

It is a happy number.

It is a congruent number.

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, 70393130 + ... + 73207889.

It is an arithmetic number, because the mean of its divisors is an integer number (9523835047930).

Almost surely, 2^{202101202120220} is an apocalyptic number.

202101202120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202101202120220 is an abundant number, since it is smaller than the sum of its proper divisors (255042880180420).

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

202101202120220 is a wasteful number, since it uses less digits than its factorization.

202101202120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143606454 (or 143606452 counting only the distinct ones).

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

Adding to 202101202120220 its reverse (22021202101202), we get a palindrome (224122404221422).

The spelling of 202101202120220 in words is "two hundred two trillion, one hundred one billion, two hundred two million, one hundred twenty thousand, two hundred twenty".