90000111221 has 8 divisors (see below), whose sum is σ = 94790128320. Its totient is φ = 85215411072.

The previous prime is 90000111203. The next prime is 90000111233. The reversal of 90000111221 is 12211100009.

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

It is a cyclic number.

It is not a de Polignac number, because 90000111221 - 2¹⁰ = 90000110197 is a prime.

It is a super-2 number, since 2×90000111221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90000111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90000116221) 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, 1294460 + ... + 1362213.

It is an arithmetic number, because the mean of its divisors is an integer number (11848766040).

Almost surely, 2^90000111221 is an apocalyptic number.

It is an amenable number.

90000111221 is a deficient number, since it is larger than the sum of its proper divisors (4790017099).

90000111221 is a wasteful number, since it uses less digits than its factorization.

90000111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658475.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 90000111221 in words is "ninety billion, one hundred eleven thousand, two hundred twenty-one".