22193121 has 16 divisors (see below), whose sum is σ = 31530240. Its totient is φ = 13844880.

The previous prime is 22193113. The next prime is 22193141. The reversal of 22193121 is 12139122.

It is not a de Polignac number, because 22193121 - 2³ = 22193113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22193141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2386 + ... + 7076.

It is an arithmetic number, because the mean of its divisors is an integer number (1970640).

Almost surely, 2^22193121 is an apocalyptic number.

It is an amenable number.

22193121 is a deficient number, since it is larger than the sum of its proper divisors (9337119).

22193121 is a wasteful number, since it uses less digits than its factorization.

22193121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796.

The product of its digits is 216, while the sum is 21.

The square root of 22193121 is about 4710.9575459773. The cubic root of 22193121 is about 281.0214435496.

The spelling of 22193121 in words is "twenty-two million, one hundred ninety-three thousand, one hundred twenty-one".