20994271219 has 2 divisors, whose sum is σ = 20994271220. Its totient is φ = 20994271218.

The previous prime is 20994271169. The next prime is 20994271289. The reversal of 20994271219 is 91217249902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20994271219 - 2¹³ = 20994263027 is a prime.

It is a super-2 number, since 2×20994271219² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20994271289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10497135609 + 10497135610.

It is an arithmetic number, because the mean of its divisors is an integer number (10497135610).

Almost surely, 2^20994271219 is an apocalyptic number.

20994271219 is a deficient number, since it is larger than the sum of its proper divisors (1).

20994271219 is an equidigital number, since it uses as much as digits as its factorization.

20994271219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 20994271219 in words is "twenty billion, nine hundred ninety-four million, two hundred seventy-one thousand, two hundred nineteen".