21492596899001 has 2 divisors, whose sum is σ = 21492596899002. Its totient is φ = 21492596899000.

The previous prime is 21492596898989. The next prime is 21492596899013. The reversal of 21492596899001 is 10099869529412.

It is a balanced prime because it is at equal distance from previous prime (21492596898989) and next prime (21492596899013).

It can be written as a sum of positive squares in only one way, i.e., 21293748685225 + 198848213776 = 4614515^2 + 445924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21492596899001 is a prime.

It is not a weakly prime, because it can be changed into another prime (21492596899031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10746298449500 + 10746298449501.

It is an arithmetic number, because the mean of its divisors is an integer number (10746298449501).

Almost surely, 2^{21492596899001} is an apocalyptic number.

It is an amenable number.

21492596899001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21492596899001 is an equidigital number, since it uses as much as digits as its factorization.

21492596899001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25194240, while the sum is 65.

The spelling of 21492596899001 in words is "twenty-one trillion, four hundred ninety-two billion, five hundred ninety-six million, eight hundred ninety-nine thousand, one".