901222109 has 4 divisors (see below), whose sum is σ = 916497120. Its totient is φ = 885947100.

The previous prime is 901222073. The next prime is 901222169.

It is a happy number.

901222109 is nontrivially palindromic in base 10.

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 901222109 - 2²⁸ = 632786653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901222169) 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, 7637417 + ... + 7637534.

It is an arithmetic number, because the mean of its divisors is an integer number (229124280).

Almost surely, 2^901222109 is an apocalyptic number.

It is an amenable number.

901222109 is a deficient number, since it is larger than the sum of its proper divisors (15275011).

901222109 is a wasteful number, since it uses less digits than its factorization.

901222109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15275010.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 901222109 is about 30020.3615734388. The cubic root of 901222109 is about 965.9261992694.

The spelling of 901222109 in words is "nine hundred one million, two hundred twenty-two thousand, one hundred nine".