2115526452121 has 2 divisors, whose sum is σ = 2115526452122. Its totient is φ = 2115526452120.

The previous prime is 2115526452113. The next prime is 2115526452187. The reversal of 2115526452121 is 1212546255112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2071757209600 + 43769242521 = 1439360^2 + 209211^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115526452121 - 2³ = 2115526452113 is a prime.

It is not a weakly prime, because it can be changed into another prime (2115526452421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057763226060 + 1057763226061.

It is an arithmetic number, because the mean of its divisors is an integer number (1057763226061).

Almost surely, 2^{2115526452121} is an apocalyptic number.

It is an amenable number.

2115526452121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115526452121 is an equidigital number, since it uses as much as digits as its factorization.

2115526452121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48000, while the sum is 37.

The spelling of 2115526452121 in words is "two trillion, one hundred fifteen billion, five hundred twenty-six million, four hundred fifty-two thousand, one hundred twenty-one".