10021221239 has 2 divisors, whose sum is σ = 10021221240. Its totient is φ = 10021221238.

The previous prime is 10021221191. The next prime is 10021221241. The reversal of 10021221239 is 93212212001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10021221239 - 2³² = 5726253943 is a prime.

It is a Sophie Germain prime.

Together with 10021221241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10021221269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010610619 + 5010610620.

It is an arithmetic number, because the mean of its divisors is an integer number (5010610620).

Almost surely, 2^10021221239 is an apocalyptic number.

10021221239 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021221239 is an equidigital number, since it uses as much as digits as its factorization.

10021221239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 10021221239 in words is "ten billion, twenty-one million, two hundred twenty-one thousand, two hundred thirty-nine".