90790111110221 has 8 divisors (see below), whose sum is σ = 94750430284224. Its totient is φ = 86830868856160.

The previous prime is 90790111110197. The next prime is 90790111110227. The reversal of 90790111110221 is 12201111109709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90790111110221 is a prime.

It is a super-2 number, since 2×90790111110221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90790111110227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269057696 + ... + 269394921.

It is an arithmetic number, because the mean of its divisors is an integer number (11843803785528).

Almost surely, 2^{90790111110221} is an apocalyptic number.

It is an amenable number.

90790111110221 is a deficient number, since it is larger than the sum of its proper divisors (3960319174003).

90790111110221 is a wasteful number, since it uses less digits than its factorization.

90790111110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538459971.

The product of its (nonzero) digits is 2268, while the sum is 35.

The spelling of 90790111110221 in words is "ninety trillion, seven hundred ninety billion, one hundred eleven million, one hundred ten thousand, two hundred twenty-one".