111112212011010 has 128 divisors (see below), whose sum is σ = 311275559232000. Its totient is φ = 25373316729600.

The previous prime is 111112212010981. The next prime is 111112212011057. The reversal of 111112212011010 is 10110212211111.

It is a super-2 number, since 2×111112212011010² (a number of 29 digits) contains 22 as substring.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5949460 + ... + 16050560.

It is an arithmetic number, because the mean of its divisors is an integer number (2431840306500).

Almost surely, 2^{111112212011010} is an apocalyptic number.

111112212011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111112212011010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155637779616000).

111112212011010 is an abundant number, since it is smaller than the sum of its proper divisors (200163347220990).

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

111112212011010 is a wasteful number, since it uses less digits than its factorization.

111112212011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102201 (or 10102187 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111112212011010 its reverse (10110212211111), we get a palindrome (121222424222121).

The spelling of 111112212011010 in words is "one hundred eleven trillion, one hundred twelve billion, two hundred twelve million, eleven thousand, ten".