90261134100121 has 4 divisors (see below), whose sum is σ = 90264428690212. Its totient is φ = 90257839510032.

The previous prime is 90261134100113. The next prime is 90261134100127. The reversal of 90261134100121 is 12100143116209.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51338371406400 + 38922762693721 = 7165080^2 + 6238811^2 .

It is a cyclic number.

It is not a de Polignac number, because 90261134100121 - 2³ = 90261134100113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90261134100127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1647253950 + ... + 1647308743.

It is an arithmetic number, because the mean of its divisors is an integer number (22566107172553).

Almost surely, 2^{90261134100121} is an apocalyptic number.

It is an amenable number.

90261134100121 is a deficient number, since it is larger than the sum of its proper divisors (3294590091).

90261134100121 is a wasteful number, since it uses less digits than its factorization.

90261134100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294590090.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 90261134100121 in words is "ninety trillion, two hundred sixty-one billion, one hundred thirty-four million, one hundred thousand, one hundred twenty-one".