221122112087 has 2 divisors, whose sum is σ = 221122112088. Its totient is φ = 221122112086.

The previous prime is 221122112059. The next prime is 221122112153. The reversal of 221122112087 is 780211221122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221122112087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221122112587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110561056043 + 110561056044.

It is an arithmetic number, because the mean of its divisors is an integer number (110561056044).

Almost surely, 2^221122112087 is an apocalyptic number.

221122112087 is a deficient number, since it is larger than the sum of its proper divisors (1).

221122112087 is an equidigital number, since it uses as much as digits as its factorization.

221122112087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 29.

The spelling of 221122112087 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, eighty-seven".