21214036266341 has 2 divisors, whose sum is σ = 21214036266342. Its totient is φ = 21214036266340.

The previous prime is 21214036266329. The next prime is 21214036266383. The reversal of 21214036266341 is 14366263041212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14177107562500 + 7036928703841 = 3765250^2 + 2652721^2 .

It is a cyclic number.

It is not a de Polignac number, because 21214036266341 - 2¹⁴ = 21214036249957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21214056266341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607018133170 + 10607018133171.

It is an arithmetic number, because the mean of its divisors is an integer number (10607018133171).

Almost surely, 2^{21214036266341} is an apocalyptic number.

It is an amenable number.

21214036266341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214036266341 is an equidigital number, since it uses as much as digits as its factorization.

21214036266341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 21214036266341 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, two hundred sixty-six thousand, three hundred forty-one".