22232202121 has 2 divisors, whose sum is σ = 22232202122. Its totient is φ = 22232202120.

The previous prime is 22232202103. The next prime is 22232202137. The reversal of 22232202121 is 12120223222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18498992121 + 3733210000 = 136011^2 + 61100^2 .

It is a cyclic number.

It is not a de Polignac number, because 22232202121 - 2⁵ = 22232202089 is a prime.

It is a super-2 number, since 2×22232202121² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22232202521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11116101060 + 11116101061.

It is an arithmetic number, because the mean of its divisors is an integer number (11116101061).

Almost surely, 2^22232202121 is an apocalyptic number.

It is an amenable number.

22232202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22232202121 is an equidigital number, since it uses as much as digits as its factorization.

22232202121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22232202121 its reverse (12120223222), we get a palindrome (34352425343).

The spelling of 22232202121 in words is "twenty-two billion, two hundred thirty-two million, two hundred two thousand, one hundred twenty-one".