22032121 has 2 divisors, whose sum is σ = 22032122. Its totient is φ = 22032120.

The previous prime is 22032097. The next prime is 22032133. The reversal of 22032121 is 12123022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19900521 + 2131600 = 4461^2 + 1460^2 .

It is a cyclic number.

It is not a de Polignac number, because 22032121 - 2⁵ = 22032089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22032161) 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, 11016060 + 11016061.

It is an arithmetic number, because the mean of its divisors is an integer number (11016061).

Almost surely, 2^22032121 is an apocalyptic number.

It is an amenable number.

22032121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22032121 is an equidigital number, since it uses as much as digits as its factorization.

22032121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22032121 is about 4693.8386210009. The cubic root of 22032121 is about 280.3402369100.

Adding to 22032121 its reverse (12123022), we get a palindrome (34155143).

Subtracting from 22032121 its reverse (12123022), we obtain a palindrome (9909099).

The spelling of 22032121 in words is "twenty-two million, thirty-two thousand, one hundred twenty-one".