22121235 has 16 divisors (see below), whose sum is σ = 39326880. Its totient is φ = 11797920.

The previous prime is 22121213. The next prime is 22121293. The reversal of 22121235 is 53212122.

It is not a de Polignac number, because 22121235 - 2¹³ = 22113043 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 81796 + ... + 82065.

It is an arithmetic number, because the mean of its divisors is an integer number (2457930).

Almost surely, 2^22121235 is an apocalyptic number.

22121235 is a deficient number, since it is larger than the sum of its proper divisors (17205645).

22121235 is a wasteful number, since it uses less digits than its factorization.

22121235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163875 (or 163869 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 22121235 is about 4703.3216985446. The cubic root of 22121235 is about 280.7176953976.

Adding to 22121235 its reverse (53212122), we get a palindrome (75333357).

The spelling of 22121235 in words is "twenty-two million, one hundred twenty-one thousand, two hundred thirty-five".