221112220110 has 16 divisors (see below), whose sum is σ = 530669328336. Its totient is φ = 58963258688.

The previous prime is 221112220099. The next prime is 221112220127. The reversal of 221112220110 is 11022211122.

It is a super-2 number, since 2×221112220110² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 221112220110.

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, 3685203639 + ... + 3685203698.

It is an arithmetic number, because the mean of its divisors is an integer number (33166833021).

Almost surely, 2^221112220110 is an apocalyptic number.

221112220110 is an abundant number, since it is smaller than the sum of its proper divisors (309557108226).

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

221112220110 is a wasteful number, since it uses less digits than its factorization.

221112220110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7370407347.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221112220110 its reverse (11022211122), we get a palindrome (232134431232).

The spelling of 221112220110 in words is "two hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, one hundred ten".