222101021999 has 4 divisors (see below), whose sum is σ = 229759677960. Its totient is φ = 214442366040.

The previous prime is 222101021971. The next prime is 222101022029. The reversal of 222101021999 is 999120101222.

It is a happy number.

222101021999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 222101021999 - 2²⁴ = 222084244783 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 (222101021299) 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, 3829327937 + ... + 3829327994.

It is an arithmetic number, because the mean of its divisors is an integer number (57439919490).

Almost surely, 2^222101021999 is an apocalyptic number.

222101021999 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

222101021999 is a deficient number, since it is larger than the sum of its proper divisors (7658655961).

222101021999 is an equidigital number, since it uses as much as digits as its factorization.

222101021999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658655960.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 222101021999 in words is "two hundred twenty-two billion, one hundred one million, twenty-one thousand, nine hundred ninety-nine".