89021121021 has 24 divisors (see below), whose sum is σ = 154690003520. Its totient is φ = 48191884416.

The previous prime is 89021121019. The next prime is 89021121037. The reversal of 89021121021 is 12012112098.

It is not a de Polignac number, because 89021121021 - 2¹ = 89021121019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89021121521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37183900 + ... + 37186293.

Almost surely, 2^89021121021 is an apocalyptic number.

It is an amenable number.

89021121021 is a deficient number, since it is larger than the sum of its proper divisors (65668882499).

89021121021 is a wasteful number, since it uses less digits than its factorization.

89021121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74370225 (or 74370222 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The spelling of 89021121021 in words is "eighty-nine billion, twenty-one million, one hundred twenty-one thousand, twenty-one".