13011020113421 has 16 divisors (see below), whose sum is σ = 14439003824448. Its totient is φ = 11625606672000.

The previous prime is 13011020113373. The next prime is 13011020113493. The reversal of 13011020113421 is 12431102011031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13011020113421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13011020113393 and 13011020113402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011020113921) 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, 42588995 + ... + 42893408.

It is an arithmetic number, because the mean of its divisors is an integer number (902437739028).

Almost surely, 2^{13011020113421} is an apocalyptic number.

13011020113421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13011020113421 is a deficient number, since it is larger than the sum of its proper divisors (1427983711027).

13011020113421 is a wasteful number, since it uses less digits than its factorization.

13011020113421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85482652.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 13011020113421 its reverse (12431102011031), we get a palindrome (25442122124452).

The spelling of 13011020113421 in words is "thirteen trillion, eleven billion, twenty million, one hundred thirteen thousand, four hundred twenty-one".