90020002102101 has 48 divisors (see below), whose sum is σ = 136958957678400. Its totient is φ = 56818841147136.

The previous prime is 90020002102073. The next prime is 90020002102103. The reversal of 90020002102101 is 10120120002009.

It is not a de Polignac number, because 90020002102101 - 2¹³ = 90020002093909 is a prime.

It is a super-2 number, since 2×90020002102101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90020002102103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2987407431 + ... + 2987437563.

It is an arithmetic number, because the mean of its divisors is an integer number (2853311618300).

Almost surely, 2^{90020002102101} is an apocalyptic number.

It is an amenable number.

90020002102101 is a deficient number, since it is larger than the sum of its proper divisors (46938955576299).

90020002102101 is a wasteful number, since it uses less digits than its factorization.

90020002102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40610 (or 40607 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 90020002102101 in words is "ninety trillion, twenty billion, two million, one hundred two thousand, one hundred one".