13401121155 has 64 divisors (see below), whose sum is σ = 22083840000. Its totient is φ = 6937362432.

The previous prime is 13401121147. The next prime is 13401121157. The reversal of 13401121155 is 55112110431.

It is not a de Polignac number, because 13401121155 - 2³ = 13401121147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13401121157) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29846371 + ... + 29846819.

It is an arithmetic number, because the mean of its divisors is an integer number (345060000).

Almost surely, 2^13401121155 is an apocalyptic number.

13401121155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13401121155 is a deficient number, since it is larger than the sum of its proper divisors (8682718845).

13401121155 is a wasteful number, since it uses less digits than its factorization.

13401121155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 600, while the sum is 24.

Adding to 13401121155 its reverse (55112110431), we get a palindrome (68513231586).

The spelling of 13401121155 in words is "thirteen billion, four hundred one million, one hundred twenty-one thousand, one hundred fifty-five".