221120012200100 has 72 divisors (see below), whose sum is σ = 534559095897960. Its totient is φ = 78828991073280.

The previous prime is 221120012200079. The next prime is 221120012200181. The reversal of 221120012200100 is 1002210021122.

It can be written as a sum of positive squares in 12 ways, for example, as 103913925417124 + 117206086782976 = 10193818^2 + 10826176^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2932588457 + ... + 2932663856.

Almost surely, 2^{221120012200100} is an apocalyptic number.

221120012200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221120012200100 is an abundant number, since it is smaller than the sum of its proper divisors (313439083697860).

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

221120012200100 is a wasteful number, since it uses less digits than its factorization.

221120012200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5865252369 (or 5865252362 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221120012200100 its reverse (1002210021122), we get a palindrome (222122222221222).

The spelling of 221120012200100 in words is "two hundred twenty-one trillion, one hundred twenty billion, twelve million, two hundred thousand, one hundred".