21000211111259 has 2 divisors, whose sum is σ = 21000211111260. Its totient is φ = 21000211111258.

The previous prime is 21000211111219. The next prime is 21000211111289. The reversal of 21000211111259 is 95211111200012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21000211111259 - 2³² = 20995916143963 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21000211111219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500105555629 + 10500105555630.

It is an arithmetic number, because the mean of its divisors is an integer number (10500105555630).

Almost surely, 2^{21000211111259} is an apocalyptic number.

21000211111259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000211111259 is an equidigital number, since it uses as much as digits as its factorization.

21000211111259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 26.

The spelling of 21000211111259 in words is "twenty-one trillion, two hundred eleven million, one hundred eleven thousand, two hundred fifty-nine".