2221811222387 has 2 divisors, whose sum is σ = 2221811222388. Its totient is φ = 2221811222386.

The previous prime is 2221811222381. The next prime is 2221811222401. The reversal of 2221811222387 is 7832221181222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221811222387 - 2⁸ = 2221811222131 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221811222381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110905611193 + 1110905611194.

It is an arithmetic number, because the mean of its divisors is an integer number (1110905611194).

Almost surely, 2^{2221811222387} is an apocalyptic number.

2221811222387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221811222387 is an equidigital number, since it uses as much as digits as its factorization.

2221811222387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 41.

The spelling of 2221811222387 in words is "two trillion, two hundred twenty-one billion, eight hundred eleven million, two hundred twenty-two thousand, three hundred eighty-seven".