221112313100 has 72 divisors (see below), whose sum is σ = 560025822720. Its totient is φ = 74196947520.

The previous prime is 221112313099. The next prime is 221112313171. The reversal of 221112313100 is 1313211122.

221112313100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221112313100² (a number of 23 digits) contains 22 as substring.

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, 3327470 + ... + 3393269.

Almost surely, 2^221112313100 is an apocalyptic number.

221112313100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221112313100 is an abundant number, since it is smaller than the sum of its proper divisors (338913509620).

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

221112313100 is a wasteful number, since it uses less digits than its factorization.

221112313100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720807 (or 6720800 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 221112313100 its reverse (1313211122), we get a palindrome (222425524222).

The spelling of 221112313100 in words is "two hundred twenty-one billion, one hundred twelve million, three hundred thirteen thousand, one hundred".