20702217199 has 2 divisors, whose sum is σ = 20702217200. Its totient is φ = 20702217198.

The previous prime is 20702217139. The next prime is 20702217233. The reversal of 20702217199 is 99171220702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20702217199 - 2⁹ = 20702216687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20702217119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10351108599 + 10351108600.

It is an arithmetic number, because the mean of its divisors is an integer number (10351108600).

Almost surely, 2^20702217199 is an apocalyptic number.

20702217199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20702217199 is an equidigital number, since it uses as much as digits as its factorization.

20702217199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 40.

The spelling of 20702217199 in words is "twenty billion, seven hundred two million, two hundred seventeen thousand, one hundred ninety-nine".