13120102181 has 2 divisors, whose sum is σ = 13120102182. Its totient is φ = 13120102180.

The previous prime is 13120102133. The next prime is 13120102249. The reversal of 13120102181 is 18120102131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11656657156 + 1463445025 = 107966^2 + 38255^2 .

It is an emirp because it is prime and its reverse (18120102131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13120102181 - 2¹⁰ = 13120101157 is a prime.

It is a super-4 number, since 4×13120102181⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13120102111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560051090 + 6560051091.

It is an arithmetic number, because the mean of its divisors is an integer number (6560051091).

Almost surely, 2^13120102181 is an apocalyptic number.

It is an amenable number.

13120102181 is a deficient number, since it is larger than the sum of its proper divisors (1).

13120102181 is an equidigital number, since it uses as much as digits as its factorization.

13120102181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

The spelling of 13120102181 in words is "thirteen billion, one hundred twenty million, one hundred two thousand, one hundred eighty-one".