202221020 has 24 divisors (see below), whose sum is σ = 435023568. Its totient is φ = 78915200.

The previous prime is 202221017. The next prime is 202221043. The reversal of 202221020 is 20122202.

202221020 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 202220992 and 202221010.

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, 122486 + ... + 124125.

It is an arithmetic number, because the mean of its divisors is an integer number (18125982).

Almost surely, 2^202221020 is an apocalyptic number.

202221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202221020 is an abundant number, since it is smaller than the sum of its proper divisors (232802548).

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

202221020 is a wasteful number, since it uses less digits than its factorization.

202221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246661 (or 246659 counting only the distinct ones).

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

The square root of 202221020 is about 14220.4437342862. The cubic root of 202221020 is about 586.9603506909.

Adding to 202221020 its reverse (20122202), we get a palindrome (222343222).

The spelling of 202221020 in words is "two hundred two million, two hundred twenty-one thousand, twenty".