21374443203101 has 2 divisors, whose sum is σ = 21374443203102. Its totient is φ = 21374443203100.

The previous prime is 21374443203097. The next prime is 21374443203263. The reversal of 21374443203101 is 10130234447312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15627750708025 + 5746692495076 = 3953195^2 + 2397226^2 .

It is a cyclic number.

It is not a de Polignac number, because 21374443203101 - 2² = 21374443203097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21374443203301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10687221601550 + 10687221601551.

It is an arithmetic number, because the mean of its divisors is an integer number (10687221601551).

Almost surely, 2^{21374443203101} is an apocalyptic number.

It is an amenable number.

21374443203101 is a deficient number, since it is larger than the sum of its proper divisors (1).

21374443203101 is an equidigital number, since it uses as much as digits as its factorization.

21374443203101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 21374443203101 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred forty-three million, two hundred three thousand, one hundred one".