90002122022191 has 4 divisors (see below), whose sum is σ = 90003971036952. Its totient is φ = 90000273007432.

The previous prime is 90002122022167. The next prime is 90002122022209. The reversal of 90002122022191 is 19122022120009.

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

It is a cyclic number.

It is not a de Polignac number, because 90002122022191 - 2¹¹ = 90002122020143 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 (90002122022291) 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, 924434365 + ... + 924531718.

It is an arithmetic number, because the mean of its divisors is an integer number (22500992759238).

Almost surely, 2^{90002122022191} is an apocalyptic number.

90002122022191 is a deficient number, since it is larger than the sum of its proper divisors (1849014761).

90002122022191 is a wasteful number, since it uses less digits than its factorization.

90002122022191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849014760.

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

The spelling of 90002122022191 in words is "ninety trillion, two billion, one hundred twenty-two million, twenty-two thousand, one hundred ninety-one".