22112100001999 has 4 divisors (see below), whose sum is σ = 25270971430864. Its totient is φ = 18953228573136.

The previous prime is 22112100001973. The next prime is 22112100002029. The reversal of 22112100001999 is 99910000121122.

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 22112100001999 - 2⁹ = 22112100001487 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 (22112100001939) 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, 1579435714422 + ... + 1579435714435.

It is an arithmetic number, because the mean of its divisors is an integer number (6317742857716).

Almost surely, 2^{22112100001999} is an apocalyptic number.

22112100001999 is a deficient number, since it is larger than the sum of its proper divisors (3158871428865).

22112100001999 is an equidigital number, since it uses as much as digits as its factorization.

22112100001999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158871428864.

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

The spelling of 22112100001999 in words is "twenty-two trillion, one hundred twelve billion, one hundred million, one thousand, nine hundred ninety-nine".