90021013332101 has 4 divisors (see below), whose sum is σ = 90057356093292. Its totient is φ = 89984670570912.

The previous prime is 90021013332097. The next prime is 90021013332119. The reversal of 90021013332101 is 10123331012009.

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 76403245401025 + 13617767931076 = 8740895^2 + 3690226^2 .

It is a cyclic number.

It is not a de Polignac number, because 90021013332101 - 2² = 90021013332097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90021073332101) 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, 18171376880 + ... + 18171381833.

It is an arithmetic number, because the mean of its divisors is an integer number (22514339023323).

Almost surely, 2^{90021013332101} is an apocalyptic number.

It is an amenable number.

90021013332101 is a deficient number, since it is larger than the sum of its proper divisors (36342761191).

90021013332101 is a wasteful number, since it uses less digits than its factorization.

90021013332101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36342761190.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 90021013332101 in words is "ninety trillion, twenty-one billion, thirteen million, three hundred thirty-two thousand, one hundred one".