23421212329 has 2 divisors, whose sum is σ = 23421212330. Its totient is φ = 23421212328.

The previous prime is 23421212327. The next prime is 23421212357. The reversal of 23421212329 is 92321212432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15945880729 + 7475331600 = 126277^2 + 86460^2 .

It is a cyclic number.

It is not a de Polignac number, because 23421212329 - 2¹ = 23421212327 is a prime.

Together with 23421212327, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23421212329.

It is not a weakly prime, because it can be changed into another prime (23421212327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710606164 + 11710606165.

It is an arithmetic number, because the mean of its divisors is an integer number (11710606165).

Almost surely, 2^23421212329 is an apocalyptic number.

It is an amenable number.

23421212329 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421212329 is an equidigital number, since it uses as much as digits as its factorization.

23421212329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The spelling of 23421212329 in words is "twenty-three billion, four hundred twenty-one million, two hundred twelve thousand, three hundred twenty-nine".