2253012321 has 16 divisors (see below), whose sum is σ = 3434626944. Its totient is φ = 1286886144.

The previous prime is 2253012313. The next prime is 2253012323. The reversal of 2253012321 is 1232103522.

It is not a de Polignac number, because 2253012321 - 2³ = 2253012313 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (2253012323) 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, 30361 + ... + 73673.

It is an arithmetic number, because the mean of its divisors is an integer number (214664184).

Almost surely, 2^2253012321 is an apocalyptic number.

2253012321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2253012321 is a deficient number, since it is larger than the sum of its proper divisors (1181614623).

2253012321 is a wasteful number, since it uses less digits than its factorization.

2253012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45800.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2253012321 is about 47465.9069332927. The cubic root of 2253012321 is about 1310.9552151691.

Adding to 2253012321 its reverse (1232103522), we get a palindrome (3485115843).

The spelling of 2253012321 in words is "two billion, two hundred fifty-three million, twelve thousand, three hundred twenty-one".