23020213121 has 2 divisors, whose sum is σ = 23020213122. Its totient is φ = 23020213120.

The previous prime is 23020213109. The next prime is 23020213141. The reversal of 23020213121 is 12131202032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15505230400 + 7514982721 = 124520^2 + 86689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23020213121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23020213121.

It is not a weakly prime, because it can be changed into another prime (23020213141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510106560 + 11510106561.

It is an arithmetic number, because the mean of its divisors is an integer number (11510106561).

Almost surely, 2^23020213121 is an apocalyptic number.

It is an amenable number.

23020213121 is a deficient number, since it is larger than the sum of its proper divisors (1).

23020213121 is an equidigital number, since it uses as much as digits as its factorization.

23020213121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23020213121 its reverse (12131202032), we get a palindrome (35151415153).

The spelling of 23020213121 in words is "twenty-three billion, twenty million, two hundred thirteen thousand, one hundred twenty-one".