90122113230221 has 4 divisors (see below), whose sum is σ = 90125321935392. Its totient is φ = 90118904525052.

The previous prime is 90122113230217. The next prime is 90122113230223. The reversal of 90122113230221 is 12203231122109.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90122113230221 - 2² = 90122113230217 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 (90122113230223) 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, 1604310455 + ... + 1604366628.

It is an arithmetic number, because the mean of its divisors is an integer number (22531330483848).

Almost surely, 2^{90122113230221} is an apocalyptic number.

It is an amenable number.

90122113230221 is a deficient number, since it is larger than the sum of its proper divisors (3208705171).

90122113230221 is a wasteful number, since it uses less digits than its factorization.

90122113230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208705170.

The product of its (nonzero) digits is 2592, while the sum is 29.

It can be divided in two parts, 901 and 22113230221, that added together give a palindrome (22113231122).

The spelling of 90122113230221 in words is "ninety trillion, one hundred twenty-two billion, one hundred thirteen million, two hundred thirty thousand, two hundred twenty-one".