1013201120020 has 12 divisors (see below), whose sum is σ = 2127722352084. Its totient is φ = 405280448000.

The previous prime is 1013201119951. The next prime is 1013201120027. The reversal of 1013201120020 is 200211023101.

It can be written as a sum of positive squares in 2 ways, for example, as 685050871684 + 328150248336 = 827678^2 + 572844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013201120027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25330027981 + ... + 25330028020.

It is an arithmetic number, because the mean of its divisors is an integer number (177310196007).

Almost surely, 2^{1013201120020} is an apocalyptic number.

1013201120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013201120020 is an abundant number, since it is smaller than the sum of its proper divisors (1114521232064).

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

1013201120020 is a wasteful number, since it uses less digits than its factorization.

1013201120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50660056010 (or 50660056008 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1013201120020 its reverse (200211023101), we get a palindrome (1213412143121).

The spelling of 1013201120020 in words is "one trillion, thirteen billion, two hundred one million, one hundred twenty thousand, twenty".