221112112002100 has 72 divisors (see below), whose sum is σ = 528828885785088. Its totient is φ = 79575492940800.

The previous prime is 221112112002073. The next prime is 221112112002161. The reversal of 221112112002100 is 1200211211122.

It is a congruent number.

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, 1036032532 + ... + 1036245931.

It is an arithmetic number, because the mean of its divisors is an integer number (7344845635904).

Almost surely, 2^{221112112002100} is an apocalyptic number.

221112112002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221112112002100 is an abundant number, since it is smaller than the sum of its proper divisors (307716773782988).

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

221112112002100 is a wasteful number, since it uses less digits than its factorization.

221112112002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072278585 (or 2072278578 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221112112002100 its reverse (1200211211122), we get a palindrome (222312323213222).

The spelling of 221112112002100 in words is "two hundred twenty-one trillion, one hundred twelve billion, one hundred twelve million, two thousand, one hundred".