221112202102 has 16 divisors (see below), whose sum is σ = 362998544832. Its totient is φ = 100178163720.

The previous prime is 221112202043. The next prime is 221112202123. The reversal of 221112202102 is 201202211122.

It is a happy number.

It is a congruent number.

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, 16362228 + ... + 16375735.

It is an arithmetic number, because the mean of its divisors is an integer number (22687409052).

Almost surely, 2^221112202102 is an apocalyptic number.

221112202102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221112202102 is a deficient number, since it is larger than the sum of its proper divisors (141886342730).

221112202102 is a wasteful number, since it uses less digits than its factorization.

221112202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32738283.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221112202102 its reverse (201202211122), we get a palindrome (422314413224).

The spelling of 221112202102 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred two thousand, one hundred two".