111231141020 has 48 divisors (see below), whose sum is σ = 246480880800. Its totient is φ = 42047631360.

The previous prime is 111231141011. The next prime is 111231141031. The reversal of 111231141020 is 20141132111.

It is a super-2 number, since 2×111231141020² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111231141020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202421 + ... + 513260.

It is an arithmetic number, because the mean of its divisors is an integer number (5135018350).

Almost surely, 2^111231141020 is an apocalyptic number.

111231141020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111231141020 is an abundant number, since it is smaller than the sum of its proper divisors (135249739780).

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

111231141020 is a wasteful number, since it uses less digits than its factorization.

111231141020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716118 (or 716116 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111231141020 its reverse (20141132111), we get a palindrome (131372273131).

The spelling of 111231141020 in words is "one hundred eleven billion, two hundred thirty-one million, one hundred forty-one thousand, twenty".