111311132312220 has 24 divisors (see below), whose sum is σ = 311671170474384. Its totient is φ = 29682968616576.

The previous prime is 111311132312197. The next prime is 111311132312227. The reversal of 111311132312220 is 22213231113111.

It is a super-2 number, since 2×111311132312220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311132312227) 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, 927592769209 + ... + 927592769328.

It is an arithmetic number, because the mean of its divisors is an integer number (12986298769766).

Almost surely, 2^{111311132312220} is an apocalyptic number.

111311132312220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111311132312220 is an abundant number, since it is smaller than the sum of its proper divisors (200360038162164).

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

111311132312220 is a wasteful number, since it uses less digits than its factorization.

111311132312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855185538549 (or 1855185538547 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 111311132312220 its reverse (22213231113111), we get a palindrome (133524363425331).

The spelling of 111311132312220 in words is "one hundred eleven trillion, three hundred eleven billion, one hundred thirty-two million, three hundred twelve thousand, two hundred twenty".