22113021 has 16 divisors (see below), whose sum is σ = 34172928. Its totient is φ = 12457200.

The previous prime is 22112999. The next prime is 22113043. The reversal of 22113021 is 12031122.

It is an interprime number because it is at equal distance from previous prime (22112999) and next prime (22113043).

It is not a de Polignac number, because 22113021 - 2⁶ = 22112957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22112988 and 22113006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22113061) 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, 5925 + ... + 8906.

It is an arithmetic number, because the mean of its divisors is an integer number (2135808).

Almost surely, 2^22113021 is an apocalyptic number.

22113021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22113021 is a deficient number, since it is larger than the sum of its proper divisors (12059907).

22113021 is a wasteful number, since it uses less digits than its factorization.

22113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14912.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 22113021 is about 4702.4484048206. The cubic root of 22113021 is about 280.6829459723.

Adding to 22113021 its reverse (12031122), we get a palindrome (34144143).

The spelling of 22113021 in words is "twenty-two million, one hundred thirteen thousand, twenty-one".