901303221 has 16 divisors (see below), whose sum is σ = 1479062144. Its totient is φ = 475412544.

The previous prime is 901303201. The next prime is 901303223. The reversal of 901303221 is 122303109.

It is a happy number.

It is not a de Polignac number, because 901303221 - 2⁹ = 901302709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901303223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1650466 + ... + 1651011.

It is an arithmetic number, because the mean of its divisors is an integer number (92441384).

Almost surely, 2^901303221 is an apocalyptic number.

901303221 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

901303221 is a deficient number, since it is larger than the sum of its proper divisors (577758923).

901303221 is a wasteful number, since it uses less digits than its factorization.

901303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301500.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 901303221 is about 30021.7124927943. The cubic root of 901303221 is about 965.9551769042.

The spelling of 901303221 in words is "nine hundred one million, three hundred three thousand, two hundred twenty-one".