22936021 has 4 divisors (see below), whose sum is σ = 24143200. Its totient is φ = 21728844.

The previous prime is 22935929. The next prime is 22936027. The reversal of 22936021 is 12063922.

It is a happy number.

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 22936021 - 2⁹ = 22935509 is a prime.

It is a super-2 number, since 2×22936021² = 1052122118624882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22936027) 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 3 ways as a sum of consecutive naturals, for example, 603561 + ... + 603598.

It is an arithmetic number, because the mean of its divisors is an integer number (6035800).

Almost surely, 2^22936021 is an apocalyptic number.

It is an amenable number.

22936021 is a deficient number, since it is larger than the sum of its proper divisors (1207179).

22936021 is a wasteful number, since it uses less digits than its factorization.

22936021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207178.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 22936021 is about 4789.1566063348. The cubic root of 22936021 is about 284.1227606888.

Adding to 22936021 its reverse (12063922), we get a palindrome (34999943).

The spelling of 22936021 in words is "twenty-two million, nine hundred thirty-six thousand, twenty-one".