23214441521 has 2 divisors, whose sum is σ = 23214441522. Its totient is φ = 23214441520.

The previous prime is 23214441517. The next prime is 23214441533. The reversal of 23214441521 is 12514441232.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21635173921 + 1579267600 = 147089^2 + 39740^2 .

It is a cyclic number.

It is not a de Polignac number, because 23214441521 - 2² = 23214441517 is a prime.

It is not a weakly prime, because it can be changed into another prime (23214441541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11607220760 + 11607220761.

It is an arithmetic number, because the mean of its divisors is an integer number (11607220761).

Almost surely, 2^23214441521 is an apocalyptic number.

It is an amenable number.

23214441521 is a deficient number, since it is larger than the sum of its proper divisors (1).

23214441521 is an equidigital number, since it uses as much as digits as its factorization.

23214441521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 29.

Adding to 23214441521 its reverse (12514441232), we get a palindrome (35728882753).

The spelling of 23214441521 in words is "twenty-three billion, two hundred fourteen million, four hundred forty-one thousand, five hundred twenty-one".