22313121 has 4 divisors (see below), whose sum is σ = 29750832. Its totient is φ = 14875412.

The previous prime is 22313113. The next prime is 22313131. The reversal of 22313121 is 12131322.

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 22313121 - 2³ = 22313113 is a prime.

It is a super-3 number, since 3×22313121³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22313121.

It is not an unprimeable number, because it can be changed into a prime (22313111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3718851 + ... + 3718856.

It is an arithmetic number, because the mean of its divisors is an integer number (7437708).

Almost surely, 2^22313121 is an apocalyptic number.

It is an amenable number.

22313121 is a deficient number, since it is larger than the sum of its proper divisors (7437711).

22313121 is an equidigital number, since it uses as much as digits as its factorization.

22313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7437710.

The product of its digits is 72, while the sum is 15.

The square root of 22313121 is about 4723.6766400760. The cubic root of 22313121 is about 281.5270352736.

Adding to 22313121 its reverse (12131322), we get a palindrome (34444443).

The spelling of 22313121 in words is "twenty-two million, three hundred thirteen thousand, one hundred twenty-one".