221102111221112 has 16 divisors (see below), whose sum is σ = 452254318407000. Its totient is φ = 100500959645920.

The previous prime is 221102111221099. The next prime is 221102111221139. The reversal of 221102111221112 is 211122111201122.

It is a happy number.

It is a super-2 number, since 2×221102111221112² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256261995487 + ... + 1256261995662.

Almost surely, 2^{221102111221112} is an apocalyptic number.

221102111221112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221102111221112 is an abundant number, since it is smaller than the sum of its proper divisors (231152207185888).

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

221102111221112 is a wasteful number, since it uses less digits than its factorization.

221102111221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512523991166 (or 2512523991162 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 221102111221112 its reverse (211122111201122), we get a palindrome (432224222422234).

The spelling of 221102111221112 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twelve".