112222200021991 has 2 divisors, whose sum is σ = 112222200021992. Its totient is φ = 112222200021990.

The previous prime is 112222200021977. The next prime is 112222200022069. The reversal of 112222200021991 is 199120002222211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 112222200021991 - 2¹³ = 112222200013799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112222200021391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56111100010995 + 56111100010996.

It is an arithmetic number, because the mean of its divisors is an integer number (56111100010996).

Almost surely, 2^{112222200021991} is an apocalyptic number.

112222200021991 is a deficient number, since it is larger than the sum of its proper divisors (1).

112222200021991 is an equidigital number, since it uses as much as digits as its factorization.

112222200021991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 112222200021991 in words is "one hundred twelve trillion, two hundred twenty-two billion, two hundred million, twenty-one thousand, nine hundred ninety-one".