111211202112 has 56 divisors (see below), whose sum is σ = 294602525856. Its totient is φ = 37025522688.

The previous prime is 111211202099. The next prime is 111211202119. The reversal of 111211202112 is 211202112111.

It is a happy number.

It is a super-2 number, since 2×111211202112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111211202091 and 111211202100.

It is not an unprimeable number, because it can be changed into a prime (111211202119) 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, 191413 + ... + 508980.

Almost surely, 2^111211202112 is an apocalyptic number.

111211202112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111211202112 is an abundant number, since it is smaller than the sum of its proper divisors (183391323744).

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

111211202112 is an equidigital number, since it uses as much as digits as its factorization.

111211202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701235 (or 701225 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111211202112 its reverse (211202112111), we get a palindrome (322413314223).

Subtracting 111211202112 from its reverse (211202112111), we obtain a palindrome (99990909999).

It can be divided in two parts, 111 and 211202112, that multiplied together give a palindrome (23443434432).

The spelling of 111211202112 in words is "one hundred eleven billion, two hundred eleven million, two hundred two thousand, one hundred twelve".