201501132130121 has 2 divisors, whose sum is σ = 201501132130122. Its totient is φ = 201501132130120.

The previous prime is 201501132130099. The next prime is 201501132130159. The reversal of 201501132130121 is 121031231105102.

201501132130121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123100378593721 + 78400753536400 = 11095061^2 + 8854420^2 .

It is a cyclic number.

It is not a de Polignac number, because 201501132130121 - 2²⁶ = 201501065021257 is a prime.

It is a super-2 number, since 2×201501132130121² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201501135130121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100750566065060 + 100750566065061.

It is an arithmetic number, because the mean of its divisors is an integer number (100750566065061).

Almost surely, 2^{201501132130121} is an apocalyptic number.

It is an amenable number.

201501132130121 is a deficient number, since it is larger than the sum of its proper divisors (1).

201501132130121 is an equidigital number, since it uses as much as digits as its factorization.

201501132130121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 201501132130121 its reverse (121031231105102), we get a palindrome (322532363235223).

The spelling of 201501132130121 in words is "two hundred one trillion, five hundred one billion, one hundred thirty-two million, one hundred thirty thousand, one hundred twenty-one".