202200221001220 has 24 divisors (see below), whose sum is σ = 457283576726424. Its totient is φ = 74658543138816.

The previous prime is 202200221001113. The next prime is 202200221001277. The reversal of 202200221001220 is 22100122002202.

It can be written as a sum of positive squares in 4 ways, for example, as 33684721253316 + 168515499747904 = 5803854^2 + 12981352^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202200221001194 and 202200221001203.

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, 388846578589 + ... + 388846579108.

It is an arithmetic number, because the mean of its divisors is an integer number (19053482363601).

Almost surely, 2^{202200221001220} is an apocalyptic number.

202200221001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202200221001220 is an abundant number, since it is smaller than the sum of its proper divisors (255083355725204).

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

202200221001220 is a wasteful number, since it uses less digits than its factorization.

202200221001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777693157719 (or 777693157717 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202200221001220 its reverse (22100122002202), we get a palindrome (224300343003422).

The spelling of 202200221001220 in words is "two hundred two trillion, two hundred billion, two hundred twenty-one million, one thousand, two hundred twenty".