21374443203301 has 2 divisors, whose sum is σ = 21374443203302. Its totient is φ = 21374443203300.

The previous prime is 21374443203263. The next prime is 21374443203307. The reversal of 21374443203301 is 10330234447312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14167500272676 + 7206942930625 = 3763974^2 + 2684575^2 .

It is a cyclic number.

It is not a de Polignac number, because 21374443203301 - 2²³ = 21374434814693 is a prime.

It is a super-2 number, since 2×21374443203301² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21374443203307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10687221601650 + 10687221601651.

It is an arithmetic number, because the mean of its divisors is an integer number (10687221601651).

Almost surely, 2^{21374443203301} is an apocalyptic number.

It is an amenable number.

21374443203301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21374443203301 is an equidigital number, since it uses as much as digits as its factorization.

21374443203301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 37.

The spelling of 21374443203301 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred forty-three million, two hundred three thousand, three hundred one".