21303422401 has 4 divisors (see below), whose sum is σ = 21879190612. Its totient is φ = 20727654192.

The previous prime is 21303422377. The next prime is 21303422419. The reversal of 21303422401 is 10422430312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18371091600 + 2932330801 = 135540^2 + 54151^2 .

It is a cyclic number.

It is not a de Polignac number, because 21303422401 - 2⁵ = 21303422369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21303422461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287884050 + ... + 287884123.

It is an arithmetic number, because the mean of its divisors is an integer number (5469797653).

Almost surely, 2^21303422401 is an apocalyptic number.

It is an amenable number.

21303422401 is a deficient number, since it is larger than the sum of its proper divisors (575768211).

21303422401 is an equidigital number, since it uses as much as digits as its factorization.

21303422401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575768210.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21303422401 its reverse (10422430312), we get a palindrome (31725852713).

The spelling of 21303422401 in words is "twenty-one billion, three hundred three million, four hundred twenty-two thousand, four hundred one".