90111200211001 has 4 divisors (see below), whose sum is σ = 90111232777104. Its totient is φ = 90111167644900.

The previous prime is 90111200210951. The next prime is 90111200211041. The reversal of 90111200211001 is 10011200211109.

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 90111200211001 - 2¹³ = 90111200202809 is a prime.

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 90111200211001.

It is not an unprimeable number, because it can be changed into a prime (90111200211041) 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, 11703115 + ... + 17809696.

It is an arithmetic number, because the mean of its divisors is an integer number (22527808194276).

Almost surely, 2^{90111200211001} is an apocalyptic number.

It is an amenable number.

90111200211001 is a deficient number, since it is larger than the sum of its proper divisors (32566103).

90111200211001 is a wasteful number, since it uses less digits than its factorization.

90111200211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32566102.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 90111200211001 in words is "ninety trillion, one hundred eleven billion, two hundred million, two hundred eleven thousand, one".