21201945593341 has 2 divisors, whose sum is σ = 21201945593342. Its totient is φ = 21201945593340.

The previous prime is 21201945593333. The next prime is 21201945593401. The reversal of 21201945593341 is 14339554910212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16030846853316 + 5171098740025 = 4003854^2 + 2274005^2 .

It is a cyclic number.

It is not a de Polignac number, because 21201945593341 - 2³ = 21201945593333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21201945593641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600972796670 + 10600972796671.

It is an arithmetic number, because the mean of its divisors is an integer number (10600972796671).

Almost surely, 2^{21201945593341} is an apocalyptic number.

It is an amenable number.

21201945593341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201945593341 is an equidigital number, since it uses as much as digits as its factorization.

21201945593341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 21201945593341 in words is "twenty-one trillion, two hundred one billion, nine hundred forty-five million, five hundred ninety-three thousand, three hundred forty-one".