102220010010991 has 2 divisors, whose sum is σ = 102220010010992. Its totient is φ = 102220010010990.

The previous prime is 102220010010971. The next prime is 102220010011111. The reversal of 102220010010991 is 199010010022201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102220010010991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102220010010971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51110005005495 + 51110005005496.

It is an arithmetic number, because the mean of its divisors is an integer number (51110005005496).

Almost surely, 2^{102220010010991} is an apocalyptic number.

102220010010991 is a deficient number, since it is larger than the sum of its proper divisors (1).

102220010010991 is an equidigital number, since it uses as much as digits as its factorization.

102220010010991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 102220010010991 in words is "one hundred two trillion, two hundred twenty billion, ten million, ten thousand, nine hundred ninety-one".