1013031101220 has 96 divisors (see below), whose sum is σ = 3082091335680. Its totient is φ = 247668036480.

The previous prime is 1013031101207. The next prime is 1013031101237. The reversal of 1013031101220 is 221011303101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1013031101220.

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, 14297302 + ... + 14367981.

It is an arithmetic number, because the mean of its divisors is an integer number (32105118080).

Almost surely, 2^{1013031101220} is an apocalyptic number.

1013031101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013031101220 is an abundant number, since it is smaller than the sum of its proper divisors (2069060234460).

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

1013031101220 is a wasteful number, since it uses less digits than its factorization.

1013031101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28665345 (or 28665343 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1013031101220 its reverse (221011303101), we get a palindrome (1234042404321).

The spelling of 1013031101220 in words is "one trillion, thirteen billion, thirty-one million, one hundred one thousand, two hundred twenty".