13421123120 has 20 divisors (see below), whose sum is σ = 31204111440. Its totient is φ = 5368449216.

The previous prime is 13421123041. The next prime is 13421123123. The reversal of 13421123120 is 2132112431.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13421123092 and 13421123101.

It is not an unprimeable number, because it can be changed into a prime (13421123123) 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, 83881940 + ... + 83882099.

It is an arithmetic number, because the mean of its divisors is an integer number (1560205572).

Almost surely, 2^13421123120 is an apocalyptic number.

13421123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13421123120 is an abundant number, since it is smaller than the sum of its proper divisors (17782988320).

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

13421123120 is a wasteful number, since it uses less digits than its factorization.

13421123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167764052 (or 167764046 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13421123120 its reverse (2132112431), we get a palindrome (15553235551).

The spelling of 13421123120 in words is "thirteen billion, four hundred twenty-one million, one hundred twenty-three thousand, one hundred twenty".