110102020219991 has 2 divisors, whose sum is σ = 110102020219992. Its totient is φ = 110102020219990.

The previous prime is 110102020219943. The next prime is 110102020220107. The reversal of 110102020219991 is 199912020201011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 110102020219991 - 2⁶ = 110102020219927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110102020219931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55051010109995 + 55051010109996.

It is an arithmetic number, because the mean of its divisors is an integer number (55051010109996).

Almost surely, 2^{110102020219991} is an apocalyptic number.

110102020219991 is a deficient number, since it is larger than the sum of its proper divisors (1).

110102020219991 is an equidigital number, since it uses as much as digits as its factorization.

110102020219991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 110102020219991 in words is "one hundred ten trillion, one hundred two billion, twenty million, two hundred nineteen thousand, nine hundred ninety-one".