13401021020 has 12 divisors (see below), whose sum is σ = 28142144184. Its totient is φ = 5360408400.

The previous prime is 13401020999. The next prime is 13401021041. The reversal of 13401021020 is 2012010431.

It is an interprime number because it is at equal distance from previous prime (13401020999) and next prime (13401021041).

It is a junction number, because it is equal to n+sod(n) for n = 13401020986 and 13401021004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335025506 + ... + 335025545.

It is an arithmetic number, because the mean of its divisors is an integer number (2345178682).

Almost surely, 2^13401021020 is an apocalyptic number.

13401021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13401021020 is an abundant number, since it is smaller than the sum of its proper divisors (14741123164).

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

13401021020 is a wasteful number, since it uses less digits than its factorization.

13401021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670051060 (or 670051058 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 13401021020 its reverse (2012010431), we get a palindrome (15413031451).

The spelling of 13401021020 in words is "thirteen billion, four hundred one million, twenty-one thousand, twenty".