21112132259 has 2 divisors, whose sum is σ = 21112132260. Its totient is φ = 21112132258.

The previous prime is 21112132231. The next prime is 21112132273. The reversal of 21112132259 is 95223121112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21112132259 is a prime.

It is not a weakly prime, because it can be changed into another prime (21112132759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556066129 + 10556066130.

It is an arithmetic number, because the mean of its divisors is an integer number (10556066130).

Almost surely, 2^21112132259 is an apocalyptic number.

21112132259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112132259 is an equidigital number, since it uses as much as digits as its factorization.

21112132259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 29.

The spelling of 21112132259 in words is "twenty-one billion, one hundred twelve million, one hundred thirty-two thousand, two hundred fifty-nine".