23220121213 has 2 divisors, whose sum is σ = 23220121214. Its totient is φ = 23220121212.

The previous prime is 23220121181. The next prime is 23220121219. The reversal of 23220121213 is 31212102232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12611739204 + 10608382009 = 112302^2 + 102997^2 .

It is a cyclic number.

It is not a de Polignac number, because 23220121213 - 2⁵ = 23220121181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23220121219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610060606 + 11610060607.

It is an arithmetic number, because the mean of its divisors is an integer number (11610060607).

Almost surely, 2^23220121213 is an apocalyptic number.

It is an amenable number.

23220121213 is a deficient number, since it is larger than the sum of its proper divisors (1).

23220121213 is an equidigital number, since it uses as much as digits as its factorization.

23220121213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 23220121213 its reverse (31212102232), we get a palindrome (54432223445).

The spelling of 23220121213 in words is "twenty-three billion, two hundred twenty million, one hundred twenty-one thousand, two hundred thirteen".