2222120987 has 2 divisors, whose sum is σ = 2222120988. Its totient is φ = 2222120986.

The previous prime is 2222120977. The next prime is 2222121007. The reversal of 2222120987 is 7890212222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2222120987 - 2⁸ = 2222120731 is a prime.

It is not a weakly prime, because it can be changed into another prime (2222120917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111060493 + 1111060494.

It is an arithmetic number, because the mean of its divisors is an integer number (1111060494).

Almost surely, 2^2222120987 is an apocalyptic number.

2222120987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222120987 is an equidigital number, since it uses as much as digits as its factorization.

2222120987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2222120987 is about 47139.3783051919. The cubic root of 2222120987 is about 1304.9360639639.

The spelling of 2222120987 in words is "two billion, two hundred twenty-two million, one hundred twenty thousand, nine hundred eighty-seven".