20221079 has 2 divisors, whose sum is σ = 20221080. Its totient is φ = 20221078.

The previous prime is 20221049. The next prime is 20221087. The reversal of 20221079 is 97012202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20221079 - 2²⁴ = 3443863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110539 + 10110540.

It is an arithmetic number, because the mean of its divisors is an integer number (10110540).

Almost surely, 2^20221079 is an apocalyptic number.

20221079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221079 is an equidigital number, since it uses as much as digits as its factorization.

20221079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20221079 is about 4496.7854073771. The cubic root of 20221079 is about 272.4382667441.

The spelling of 20221079 in words is "twenty million, two hundred twenty-one thousand, seventy-nine".