20021103079 has 2 divisors, whose sum is σ = 20021103080. Its totient is φ = 20021103078.

The previous prime is 20021103061. The next prime is 20021103083. The reversal of 20021103079 is 97030112002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20021103079 - 2³¹ = 17873619431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021103019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010551539 + 10010551540.

It is an arithmetic number, because the mean of its divisors is an integer number (10010551540).

Almost surely, 2^20021103079 is an apocalyptic number.

20021103079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021103079 is an equidigital number, since it uses as much as digits as its factorization.

20021103079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The spelling of 20021103079 in words is "twenty billion, twenty-one million, one hundred three thousand, seventy-nine".