102211021999 has 4 divisors (see below), whose sum is σ = 102775723960. Its totient is φ = 101646320040.

The previous prime is 102211021993. The next prime is 102211022009. The reversal of 102211021999 is 999120112201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999120112201 = 277 ⋅3606931813.

It is a cyclic number.

It is not a de Polignac number, because 102211021999 - 2⁵ = 102211021967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102211021993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282350709 + ... + 282351070.

It is an arithmetic number, because the mean of its divisors is an integer number (25693930990).

Almost surely, 2^102211021999 is an apocalyptic number.

102211021999 is a deficient number, since it is larger than the sum of its proper divisors (564701961).

102211021999 is an equidigital number, since it uses as much as digits as its factorization.

102211021999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564701960.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 102211021999 in words is "one hundred two billion, two hundred eleven million, twenty-one thousand, nine hundred ninety-nine".