921023201 has 32 divisors (see below), whose sum is σ = 1124499456. Its totient is φ = 737352000.

The previous prime is 921023183. The next prime is 921023231. The reversal of 921023201 is 102320129.

It is not a de Polignac number, because 921023201 - 2²⁶ = 853914337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921023231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1875566 + ... + 1876056.

It is an arithmetic number, because the mean of its divisors is an integer number (35140608).

Almost surely, 2^921023201 is an apocalyptic number.

It is an amenable number.

921023201 is a deficient number, since it is larger than the sum of its proper divisors (203476255).

921023201 is a wasteful number, since it uses less digits than its factorization.

921023201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 921023201 is about 30348.3640580510. The cubic root of 921023201 is about 972.9492556243.

The spelling of 921023201 in words is "nine hundred twenty-one million, twenty-three thousand, two hundred one".