221112100102 has 4 divisors (see below), whose sum is σ = 331668150156. Its totient is φ = 110556050050.

The previous prime is 221112100051. The next prime is 221112100103. The reversal of 221112100102 is 201001211122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201001211122 = 2 ⋅100500605561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112100103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55278025024 + ... + 55278025027.

It is an arithmetic number, because the mean of its divisors is an integer number (82917037539).

Almost surely, 2^221112100102 is an apocalyptic number.

221112100102 is a deficient number, since it is larger than the sum of its proper divisors (110556050054).

221112100102 is a wasteful number, since it uses less digits than its factorization.

221112100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110556050053.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221112100102 its reverse (201001211122), we get a palindrome (422113311224).

The spelling of 221112100102 in words is "two hundred twenty-one billion, one hundred twelve million, one hundred thousand, one hundred two".