22723201 has 4 divisors (see below), whose sum is σ = 23108400. Its totient is φ = 22338004.

The previous prime is 22723199. The next prime is 22723277. The reversal of 22723201 is 10232722.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10232722 = 2 ⋅5116361.

It is a cyclic number.

It is not a de Polignac number, because 22723201 - 2¹ = 22723199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22723801) 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, 192511 + ... + 192628.

It is an arithmetic number, because the mean of its divisors is an integer number (5777100).

Almost surely, 2^22723201 is an apocalyptic number.

It is an amenable number.

22723201 is a deficient number, since it is larger than the sum of its proper divisors (385199).

22723201 is an equidigital number, since it uses as much as digits as its factorization.

22723201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385198.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 22723201 is about 4766.8858807402. The cubic root of 22723201 is about 283.2412506610.

Adding to 22723201 its reverse (10232722), we get a palindrome (32955923).

The spelling of 22723201 in words is "twenty-two million, seven hundred twenty-three thousand, two hundred one".