20211022079 has 2 divisors, whose sum is σ = 20211022080. Its totient is φ = 20211022078.

The previous prime is 20211022049. The next prime is 20211022127. The reversal of 20211022079 is 97022011202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211022079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211022049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105511039 + 10105511040.

It is an arithmetic number, because the mean of its divisors is an integer number (10105511040).

Almost surely, 2^20211022079 is an apocalyptic number.

20211022079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211022079 is an equidigital number, since it uses as much as digits as its factorization.

20211022079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The spelling of 20211022079 in words is "twenty billion, two hundred eleven million, twenty-two thousand, seventy-nine".