90211210211 has 4 divisors (see below), whose sum is σ = 90279501624. Its totient is φ = 90142918800.

The previous prime is 90211210181. The next prime is 90211210231. The reversal of 90211210211 is 11201211209.

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 90211210211 - 2¹⁴ = 90211193827 is a prime.

It is a super-3 number, since 3×90211210211³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90211210231) 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, 34143725 + ... + 34146366.

It is an arithmetic number, because the mean of its divisors is an integer number (22569875406).

Almost surely, 2^90211210211 is an apocalyptic number.

90211210211 is a deficient number, since it is larger than the sum of its proper divisors (68291413).

90211210211 is a wasteful number, since it uses less digits than its factorization.

90211210211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68291412.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 90211210211 in words is "ninety billion, two hundred eleven million, two hundred ten thousand, two hundred eleven".