1013512220020 has 48 divisors (see below), whose sum is σ = 2165299133760. Its totient is φ = 398400735744.

The previous prime is 1013512219997. The next prime is 1013512220027. The reversal of 1013512220020 is 200222153101.

It is a self number, because there is not a number n which added to its sum of digits gives 1013512220020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013512220027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341109 + ... + 1464028.

It is an arithmetic number, because the mean of its divisors is an integer number (45110398620).

Almost surely, 2^{1013512220020} is an apocalyptic number.

1013512220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013512220020 is an abundant number, since it is smaller than the sum of its proper divisors (1151786913740).

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

1013512220020 is a wasteful number, since it uses less digits than its factorization.

1013512220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805632 (or 1805630 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 1013512220020 its reverse (200222153101), we get a palindrome (1213734373121).

The spelling of 1013512220020 in words is "one trillion, thirteen billion, five hundred twelve million, two hundred twenty thousand, twenty".