90222211 has 4 divisors (see below), whose sum is σ = 90478152. Its totient is φ = 89966272.

The previous prime is 90222199. The next prime is 90222217. The reversal of 90222211 is 11222209.

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 90222211 - 2¹⁵ = 90189443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90222217) 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, 127441 + ... + 128146.

It is an arithmetic number, because the mean of its divisors is an integer number (22619538).

Almost surely, 2^90222211 is an apocalyptic number.

90222211 is a deficient number, since it is larger than the sum of its proper divisors (255941).

90222211 is a wasteful number, since it uses less digits than its factorization.

90222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255940.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 90222211 is about 9498.5373084491. The cubic root of 90222211 is about 448.5089928005.

The spelling of 90222211 in words is "ninety million, two hundred twenty-two thousand, two hundred eleven".