102221221001999 has 4 divisors (see below), whose sum is σ = 111514059274920. Its totient is φ = 92928382729080.

The previous prime is 102221221001981. The next prime is 102221221002011. The reversal of 102221221001999 is 999100122122201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102221221001999 - 2⁴⁴ = 84629034957583 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 (102221221001399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4646419136444 + ... + 4646419136465.

It is an arithmetic number, because the mean of its divisors is an integer number (27878514818730).

Almost surely, 2^{102221221001999} is an apocalyptic number.

102221221001999 is a deficient number, since it is larger than the sum of its proper divisors (9292838272921).

102221221001999 is an equidigital number, since it uses as much as digits as its factorization.

102221221001999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9292838272920.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 102221221001999 in words is "one hundred two trillion, two hundred twenty-one billion, two hundred twenty-one million, one thousand, nine hundred ninety-nine".