90211120201 has 4 divisors (see below), whose sum is σ = 90214705152. Its totient is φ = 90207535252.

The previous prime is 90211120163. The next prime is 90211120213. The reversal of 90211120201 is 10202111209.

It is a happy number.

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 90211120201 - 2¹⁷ = 90210989129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90211120231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754461 + ... + 1805146.

It is an arithmetic number, because the mean of its divisors is an integer number (22553676288).

Almost surely, 2^90211120201 is an apocalyptic number.

It is an amenable number.

90211120201 is a deficient number, since it is larger than the sum of its proper divisors (3584951).

90211120201 is a wasteful number, since it uses less digits than its factorization.

90211120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584950.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 90211120201 in words is "ninety billion, two hundred eleven million, one hundred twenty thousand, two hundred one".