20222013195991 has 2 divisors, whose sum is σ = 20222013195992. Its totient is φ = 20222013195990.

The previous prime is 20222013195977. The next prime is 20222013196037. The reversal of 20222013195991 is 19959131022202.

It is an a-pointer prime, because the next prime (20222013196037) can be obtained adding 20222013195991 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20222013195991 - 2¹⁵ = 20222013163223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20222013195941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111006597995 + 10111006597996.

It is an arithmetic number, because the mean of its divisors is an integer number (10111006597996).

Almost surely, 2^{20222013195991} is an apocalyptic number.

20222013195991 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222013195991 is an equidigital number, since it uses as much as digits as its factorization.

20222013195991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 46.

The spelling of 20222013195991 in words is "twenty trillion, two hundred twenty-two billion, thirteen million, one hundred ninety-five thousand, nine hundred ninety-one".