21122020210279 has 2 divisors, whose sum is σ = 21122020210280. Its totient is φ = 21122020210278.

The previous prime is 21122020210169. The next prime is 21122020210327. The reversal of 21122020210279 is 97201202022112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21122020210279 is a prime.

It is a super-2 number, since 2×21122020210279² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21122020210279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21122020210079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561010105139 + 10561010105140.

It is an arithmetic number, because the mean of its divisors is an integer number (10561010105140).

Almost surely, 2^{21122020210279} is an apocalyptic number.

21122020210279 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122020210279 is an equidigital number, since it uses as much as digits as its factorization.

21122020210279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 21122020210279 in words is "twenty-one trillion, one hundred twenty-two billion, twenty million, two hundred ten thousand, two hundred seventy-nine".