21514401023 has 2 divisors, whose sum is σ = 21514401024. Its totient is φ = 21514401022.

The previous prime is 21514400981. The next prime is 21514401031. The reversal of 21514401023 is 32010441512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21514401023 - 2⁶ = 21514400959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21514401023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21514701023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10757200511 + 10757200512.

It is an arithmetic number, because the mean of its divisors is an integer number (10757200512).

Almost surely, 2^21514401023 is an apocalyptic number.

21514401023 is a deficient number, since it is larger than the sum of its proper divisors (1).

21514401023 is an equidigital number, since it uses as much as digits as its factorization.

21514401023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 21514401023 its reverse (32010441512), we get a palindrome (53524842535).

The spelling of 21514401023 in words is "twenty-one billion, five hundred fourteen million, four hundred one thousand, twenty-three".