21010132139 has 2 divisors, whose sum is σ = 21010132140. Its totient is φ = 21010132138.

The previous prime is 21010132093. The next prime is 21010132141. The reversal of 21010132139 is 93123101012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21010132139 is a prime.

Together with 21010132141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21010132439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505066069 + 10505066070.

It is an arithmetic number, because the mean of its divisors is an integer number (10505066070).

Almost surely, 2^21010132139 is an apocalyptic number.

21010132139 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010132139 is an equidigital number, since it uses as much as digits as its factorization.

21010132139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 21010132139 in words is "twenty-one billion, ten million, one hundred thirty-two thousand, one hundred thirty-nine".