111101010111020 has 24 divisors (see below), whose sum is σ = 234601138485168. Its totient is φ = 44194876948800.

The previous prime is 111101010111011. The next prime is 111101010111043. The reversal of 111101010111020 is 20111010101111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111101010110992 and 111101010111010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15345439766 + ... + 15345447005.

It is an arithmetic number, because the mean of its divisors is an integer number (9775047436882).

Almost surely, 2^{111101010111020} is an apocalyptic number.

111101010111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111101010111020 is an abundant number, since it is smaller than the sum of its proper divisors (123500128374148).

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

111101010111020 is a wasteful number, since it uses less digits than its factorization.

111101010111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30690886961 (or 30690886959 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 111101010111020 its reverse (20111010101111), we get a palindrome (131212020212131).

Subtracting from 111101010111020 its reverse (20111010101111), we obtain a palindrome (90990000009909).

The spelling of 111101010111020 in words is "one hundred eleven trillion, one hundred one billion, ten million, one hundred eleven thousand, twenty".