221102219999987 has 2 divisors, whose sum is σ = 221102219999988. Its totient is φ = 221102219999986.

The previous prime is 221102219999951. The next prime is 221102220000029. The reversal of 221102219999987 is 789999912201122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221102219999987 - 2⁶ = 221102219999923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221102219999987.

It is not a weakly prime, because it can be changed into another prime (221102219999917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551109999993 + 110551109999994.

It is an arithmetic number, because the mean of its divisors is an integer number (110551109999994).

Almost surely, 2^{221102219999987} is an apocalyptic number.

221102219999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

221102219999987 is an equidigital number, since it uses as much as digits as its factorization.

221102219999987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52907904, while the sum is 71.

The spelling of 221102219999987 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred nineteen million, nine hundred ninety-nine thousand, nine hundred eighty-seven".