21201020101259 has 2 divisors, whose sum is σ = 21201020101260. Its totient is φ = 21201020101258.

The previous prime is 21201020101207. The next prime is 21201020101271. The reversal of 21201020101259 is 95210102010212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21201020101259 - 2⁸ = 21201020101003 is a prime.

It is a super-2 number, since 2×21201020101259² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21201020101159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600510050629 + 10600510050630.

It is an arithmetic number, because the mean of its divisors is an integer number (10600510050630).

Almost surely, 2^{21201020101259} is an apocalyptic number.

21201020101259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201020101259 is an equidigital number, since it uses as much as digits as its factorization.

21201020101259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 21201020101259 in words is "twenty-one trillion, two hundred one billion, twenty million, one hundred one thousand, two hundred fifty-nine".