21374403403201 has 4 divisors (see below), whose sum is σ = 21381483367600. Its totient is φ = 21367323438804.

The previous prime is 21374403403099. The next prime is 21374403403237. The reversal of 21374403403201 is 10230430447312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21374403403201 - 2²⁷ = 21374269185473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21374403403271) 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, 3539977671 + ... + 3539983708.

It is an arithmetic number, because the mean of its divisors is an integer number (5345370841900).

Almost surely, 2^{21374403403201} is an apocalyptic number.

It is an amenable number.

21374403403201 is a deficient number, since it is larger than the sum of its proper divisors (7079964399).

21374403403201 is an equidigital number, since it uses as much as digits as its factorization.

21374403403201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7079964398.

The product of its (nonzero) digits is 48384, while the sum is 34.

The spelling of 21374403403201 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred three million, four hundred three thousand, two hundred one".