21202230079 has 2 divisors, whose sum is σ = 21202230080. Its totient is φ = 21202230078.

The previous prime is 21202230073. The next prime is 21202230121. The reversal of 21202230079 is 97003220212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21202230079 - 2¹⁷ = 21202099007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202230073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601115039 + 10601115040.

It is an arithmetic number, because the mean of its divisors is an integer number (10601115040).

Almost surely, 2^21202230079 is an apocalyptic number.

21202230079 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202230079 is an equidigital number, since it uses as much as digits as its factorization.

21202230079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 21202230079 in words is "twenty-one billion, two hundred two million, two hundred thirty thousand, seventy-nine".