202120220 has 24 divisors (see below), whose sum is σ = 426114864. Its totient is φ = 80531456.

The previous prime is 202120187. The next prime is 202120249. The reversal of 202120220 is 22021202.

It is a zygodrome in base 2.

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, 14522 + ... + 24801.

It is an arithmetic number, because the mean of its divisors is an integer number (17754786).

Almost surely, 2^202120220 is an apocalyptic number.

202120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202120220 is an abundant number, since it is smaller than the sum of its proper divisors (223994644).

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

202120220 is a wasteful number, since it uses less digits than its factorization.

202120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39589 (or 39587 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 202120220 is about 14216.8990993114. The cubic root of 202120220 is about 586.8628081824.

Adding to 202120220 its reverse (22021202), we get a palindrome (224141422).

The spelling of 202120220 in words is "two hundred two million, one hundred twenty thousand, two hundred twenty".