13402021120 has 36 divisors (see below), whose sum is σ = 32102031780. Its totient is φ = 5360807936.

The previous prime is 13402021117. The next prime is 13402021183. The reversal of 13402021120 is 2112020431.

It can be written as a sum of positive squares in 2 ways, for example, as 6474455296 + 6927565824 = 80464^2 + 83232^2 .

It is a super-2 number, since 2×13402021120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 13402021094 and 13402021103.

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, 5233885 + ... + 5236444.

It is an arithmetic number, because the mean of its divisors is an integer number (891723105).

Almost surely, 2^13402021120 is an apocalyptic number.

13402021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13402021120 is an abundant number, since it is smaller than the sum of its proper divisors (18700010660).

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

13402021120 is an equidigital number, since it uses as much as digits as its factorization.

13402021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10470350 (or 10470336 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 13402021120 its reverse (2112020431), we get a palindrome (15514041551).

The spelling of 13402021120 in words is "thirteen billion, four hundred two million, twenty-one thousand, one hundred twenty".