221102210999987 has 2 divisors, whose sum is σ = 221102210999988. Its totient is φ = 221102210999986.

The previous prime is 221102210999963. The next prime is 221102211000037. The reversal of 221102210999987 is 789999012201122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221102210999987 is a prime.

It is not a weakly prime, because it can be changed into another prime (221102210992987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551105499993 + 110551105499994.

It is an arithmetic number, because the mean of its divisors is an integer number (110551105499994).

Almost surely, 2^{221102210999987} is an apocalyptic number.

221102210999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

221102210999987 is an equidigital number, since it uses as much as digits as its factorization.

221102210999987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 62.

The spelling of 221102210999987 in words is "two hundred twenty-one trillion, one hundred two billion, two hundred ten million, nine hundred ninety-nine thousand, nine hundred eighty-seven".