13156101121 has 2 divisors, whose sum is σ = 13156101122. Its totient is φ = 13156101120.

The previous prime is 13156101109. The next prime is 13156101157. The reversal of 13156101121 is 12110165131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13142329600 + 13771521 = 114640^2 + 3711^2 .

It is a cyclic number.

It is not a de Polignac number, because 13156101121 - 2¹⁵ = 13156068353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13156101092 and 13156101101.

It is not a weakly prime, because it can be changed into another prime (13156101221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6578050560 + 6578050561.

It is an arithmetic number, because the mean of its divisors is an integer number (6578050561).

Almost surely, 2^13156101121 is an apocalyptic number.

It is an amenable number.

13156101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13156101121 is an equidigital number, since it uses as much as digits as its factorization.

13156101121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 22.

Adding to 13156101121 its reverse (12110165131), we get a palindrome (25266266252).

The spelling of 13156101121 in words is "thirteen billion, one hundred fifty-six million, one hundred one thousand, one hundred twenty-one".