220022212121891 has 2 divisors, whose sum is σ = 220022212121892. Its totient is φ = 220022212121890.

The previous prime is 220022212121857. The next prime is 220022212121897. The reversal of 220022212121891 is 198121212220022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220022212121891 is a prime.

It is not a weakly prime, because it can be changed into another prime (220022212121897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110011106060945 + 110011106060946.

It is an arithmetic number, because the mean of its divisors is an integer number (110011106060946).

Almost surely, 2^{220022212121891} is an apocalyptic number.

220022212121891 is a deficient number, since it is larger than the sum of its proper divisors (1).

220022212121891 is an equidigital number, since it uses as much as digits as its factorization.

220022212121891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The spelling of 220022212121891 in words is "two hundred twenty trillion, twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, eight hundred ninety-one".