21240200135159 has 2 divisors, whose sum is σ = 21240200135160. Its totient is φ = 21240200135158.

The previous prime is 21240200135087. The next prime is 21240200135233. The reversal of 21240200135159 is 95153100204212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21240200135159 - 2²⁸ = 21239931699703 is a prime.

It is a super-2 number, since 2×21240200135159² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21240200155159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10620100067579 + 10620100067580.

It is an arithmetic number, because the mean of its divisors is an integer number (10620100067580).

Almost surely, 2^{21240200135159} is an apocalyptic number.

21240200135159 is a deficient number, since it is larger than the sum of its proper divisors (1).

21240200135159 is an equidigital number, since it uses as much as digits as its factorization.

21240200135159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 21240200135159 in words is "twenty-one trillion, two hundred forty billion, two hundred million, one hundred thirty-five thousand, one hundred fifty-nine".