11111112211210 has 64 divisors (see below), whose sum is σ = 22800137748480. Its totient is φ = 3859075612480.

The previous prime is 11111112211207. The next prime is 11111112211249. The reversal of 11111112211210 is 1211221111111.

It is a super-3 number, since 3×11111112211210³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1487050 + ... + 4943029.

It is an arithmetic number, because the mean of its divisors is an integer number (356252152320).

Almost surely, 2^{11111112211210} is an apocalyptic number.

11111112211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111112211210 is an abundant number, since it is smaller than the sum of its proper divisors (11689025537270).

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

11111112211210 is a wasteful number, since it uses less digits than its factorization.

11111112211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430803.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11111112211210 its reverse (1211221111111), we get a palindrome (12322333322321).

It can be divided in two parts, 111111 and 12211210, that added together give a palindrome (12322321).

The spelling of 11111112211210 in words is "eleven trillion, one hundred eleven billion, one hundred twelve million, two hundred eleven thousand, two hundred ten".