1222110101999 has 4 divisors (see below), whose sum is σ = 1222128940200. Its totient is φ = 1222091263800.

The previous prime is 1222110101987. The next prime is 1222110102007. The reversal of 1222110101999 is 9991010112221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222110101999 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 (1222110101099) 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, 9321452 + ... + 9451649.

It is an arithmetic number, because the mean of its divisors is an integer number (305532235050).

Almost surely, 2^{1222110101999} is an apocalyptic number.

1222110101999 is a deficient number, since it is larger than the sum of its proper divisors (18838201).

1222110101999 is an equidigital number, since it uses as much as digits as its factorization.

1222110101999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18838200.

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

The spelling of 1222110101999 in words is "one trillion, two hundred twenty-two billion, one hundred ten million, one hundred one thousand, nine hundred ninety-nine".