22786121 has 4 divisors (see below), whose sum is σ = 22800912. Its totient is φ = 22771332.

The previous prime is 22786081. The next prime is 22786129. The reversal of 22786121 is 12168722.

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: 12168722 = 2 ⋅6084361.

It is a cyclic number.

It is not a de Polignac number, because 22786121 - 2¹⁴ = 22769737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22786129) 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, 4775 + ... + 8268.

It is an arithmetic number, because the mean of its divisors is an integer number (5700228).

Almost surely, 2^22786121 is an apocalyptic number.

It is an amenable number.

22786121 is a deficient number, since it is larger than the sum of its proper divisors (14791).

22786121 is a wasteful number, since it uses less digits than its factorization.

22786121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14790.

The product of its digits is 2688, while the sum is 29.

The square root of 22786121 is about 4773.4810149408. The cubic root of 22786121 is about 283.5024391501.

The spelling of 22786121 in words is "twenty-two million, seven hundred eighty-six thousand, one hundred twenty-one".