221112220102 has 32 divisors (see below), whose sum is σ = 338238568800. Its totient is φ = 108388800000.

The previous prime is 221112220099. The next prime is 221112220127. The reversal of 221112220102 is 201022211122.

It is a happy number.

It is a super-2 number, since 2×221112220102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68011977 + ... + 68015227.

It is an arithmetic number, because the mean of its divisors is an integer number (10569955275).

Almost surely, 2^221112220102 is an apocalyptic number.

221112220102 is a deficient number, since it is larger than the sum of its proper divisors (117126348698).

221112220102 is a wasteful number, since it uses less digits than its factorization.

221112220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6552.

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

Adding to 221112220102 its reverse (201022211122), we get a palindrome (422134431224).

It can be divided in two parts, 2211122 and 20102, that multiplied together give a palindrome (44447974444).

The spelling of 221112220102 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, one hundred two".