21336996844907 has 2 divisors, whose sum is σ = 21336996844908. Its totient is φ = 21336996844906.

The previous prime is 21336996844729. The next prime is 21336996844921. The reversal of 21336996844907 is 70944869963312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21336996844907 - 2¹⁴ = 21336996828523 is a prime.

It is a super-2 number, since 2×21336996844907² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21336996744907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10668498422453 + 10668498422454.

It is an arithmetic number, because the mean of its divisors is an integer number (10668498422454).

Almost surely, 2^{21336996844907} is an apocalyptic number.

21336996844907 is a deficient number, since it is larger than the sum of its proper divisors (1).

21336996844907 is an equidigital number, since it uses as much as digits as its factorization.

21336996844907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423263232, while the sum is 71.

The spelling of 21336996844907 in words is "twenty-one trillion, three hundred thirty-six billion, nine hundred ninety-six million, eight hundred forty-four thousand, nine hundred seven".