111221002112 has 64 divisors (see below), whose sum is σ = 252225567360. Its totient is φ = 48356943360.

The previous prime is 111221002099. The next prime is 111221002117. The reversal of 111221002112 is 211200122111.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×111221002112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221002117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684838 + ... + 1749605.

It is an arithmetic number, because the mean of its divisors is an integer number (3941024490).

Almost surely, 2^111221002112 is an apocalyptic number.

It is an amenable number.

111221002112 is an abundant number, since it is smaller than the sum of its proper divisors (141004565248).

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

111221002112 is a wasteful number, since it uses less digits than its factorization.

111221002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3434491 (or 3434479 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111221002112 its reverse (211200122111), we get a palindrome (322421124223).

The spelling of 111221002112 in words is "one hundred eleven billion, two hundred twenty-one million, two thousand, one hundred twelve".