101111311020 has 48 divisors (see below), whose sum is σ = 283442167008. Its totient is φ = 26931540480.

The previous prime is 101111311003. The next prime is 101111311033. The reversal of 101111311020 is 20113111101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 101111310987 and 101111311005.

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, 931771 + ... + 1034610.

It is an arithmetic number, because the mean of its divisors is an integer number (5905045146).

Almost surely, 2^101111311020 is an apocalyptic number.

101111311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101111311020 is an abundant number, since it is smaller than the sum of its proper divisors (182330855988).

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

101111311020 is a wasteful number, since it uses less digits than its factorization.

101111311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967250 (or 1967248 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 101111311020 its reverse (20113111101), we get a palindrome (121224422121).

The spelling of 101111311020 in words is "one hundred one billion, one hundred eleven million, three hundred eleven thousand, twenty".