22751121 has 4 divisors (see below), whose sum is σ = 30334832. Its totient is φ = 15167412.

The previous prime is 22751111. The next prime is 22751137. The reversal of 22751121 is 12115722.

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 not a de Polignac number, because 22751121 - 2¹¹ = 22749073 is a prime.

It is a super-2 number, since 2×22751121² = 1035227013513282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22751111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3791851 + ... + 3791856.

It is an arithmetic number, because the mean of its divisors is an integer number (7583708).

Almost surely, 2^22751121 is an apocalyptic number.

It is an amenable number.

22751121 is a deficient number, since it is larger than the sum of its proper divisors (7583711).

22751121 is an equidigital number, since it uses as much as digits as its factorization.

22751121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7583710.

The product of its digits is 280, while the sum is 21.

The square root of 22751121 is about 4769.8135183674. The cubic root of 22751121 is about 283.3572093682.

Adding to 22751121 its reverse (12115722), we get a palindrome (34866843).

The spelling of 22751121 in words is "twenty-two million, seven hundred fifty-one thousand, one hundred twenty-one".