221101010202120 has 32 divisors (see below), whose sum is σ = 663303030606720. Its totient is φ = 58960269387200.

The previous prime is 221101010202103. The next prime is 221101010202167. The reversal of 221101010202120 is 21202010101122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221101010202120.

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, 921254209056 + ... + 921254209295.

It is an arithmetic number, because the mean of its divisors is an integer number (20728219706460).

Almost surely, 2^{221101010202120} is an apocalyptic number.

221101010202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221101010202120 is an abundant number, since it is smaller than the sum of its proper divisors (442202020404600).

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

221101010202120 is a wasteful number, since it uses less digits than its factorization.

221101010202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842508418365 (or 1842508418361 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221101010202120 its reverse (21202010101122), we get a palindrome (242303020303242).

The spelling of 221101010202120 in words is "two hundred twenty-one trillion, one hundred one billion, ten million, two hundred two thousand, one hundred twenty".