22132921 has 2 divisors, whose sum is σ = 22132922. Its totient is φ = 22132920.

The previous prime is 22132897. The next prime is 22132931. The reversal of 22132921 is 12923122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 3857296 = 4275^2 + 1964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22132921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22132892 and 22132901.

It is not a weakly prime, because it can be changed into another prime (22132931) 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 as a sum of consecutive naturals, namely, 11066460 + 11066461.

It is an arithmetic number, because the mean of its divisors is an integer number (11066461).

Almost surely, 2^22132921 is an apocalyptic number.

It is an amenable number.

22132921 is a deficient number, since it is larger than the sum of its proper divisors (1).

22132921 is an equidigital number, since it uses as much as digits as its factorization.

22132921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 22.

The square root of 22132921 is about 4704.5638480097. The cubic root of 22132921 is about 280.7671183389.

The spelling of 22132921 in words is "twenty-two million, one hundred thirty-two thousand, nine hundred twenty-one".