900221011211 has 4 divisors (see below), whose sum is σ = 900320043624. Its totient is φ = 900121978800.

The previous prime is 900221011153. The next prime is 900221011231. The reversal of 900221011211 is 112110122009.

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 900221011211 - 2⁶ = 900221011147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (900221011231) 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, 49502570 + ... + 49520751.

It is an arithmetic number, because the mean of its divisors is an integer number (225080010906).

Almost surely, 2^900221011211 is an apocalyptic number.

900221011211 is a deficient number, since it is larger than the sum of its proper divisors (99032413).

900221011211 is an equidigital number, since it uses as much as digits as its factorization.

900221011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99032412.

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

The spelling of 900221011211 in words is "nine hundred billion, two hundred twenty-one million, eleven thousand, two hundred eleven".