222120320987 has 2 divisors, whose sum is σ = 222120320988. Its totient is φ = 222120320986.

The previous prime is 222120320959. The next prime is 222120321127. The reversal of 222120320987 is 789023021222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222120320987 - 2²⁰ = 222119272411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222120320987.

It is not a weakly prime, because it can be changed into another prime (222120320887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060160493 + 111060160494.

It is an arithmetic number, because the mean of its divisors is an integer number (111060160494).

Almost surely, 2^222120320987 is an apocalyptic number.

222120320987 is a deficient number, since it is larger than the sum of its proper divisors (1).

222120320987 is an equidigital number, since it uses as much as digits as its factorization.

222120320987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 222120320987 in words is "two hundred twenty-two billion, one hundred twenty million, three hundred twenty thousand, nine hundred eighty-seven".