202021020220 has 24 divisors (see below), whose sum is σ = 424360941984. Its totient is φ = 80786160576.

The previous prime is 202021020211. The next prime is 202021020247. The reversal of 202021020220 is 22020120202.

It is a super-2 number, since 2×202021020220² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202021020220.

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, 1315912 + ... + 1461391.

It is an arithmetic number, because the mean of its divisors is an integer number (17681705916).

Almost surely, 2^202021020220 is an apocalyptic number.

202021020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202021020220 is an abundant number, since it is smaller than the sum of its proper divisors (222339921764).

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

202021020220 is a wasteful number, since it uses less digits than its factorization.

202021020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780949 (or 2780947 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 202021020220 its reverse (22020120202), we get a palindrome (224041140422).

The spelling of 202021020220 in words is "two hundred two billion, twenty-one million, twenty thousand, two hundred twenty".