21119123199 has 16 divisors (see below), whose sum is σ = 28341682304. Its totient is φ = 13988052000.

The previous prime is 21119123197. The next prime is 21119123213. The reversal of 21119123199 is 99132191112.

It is not a de Polignac number, because 21119123199 - 2¹ = 21119123197 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 (21119123197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1799049 + ... + 1810749.

It is an arithmetic number, because the mean of its divisors is an integer number (1771355144).

Almost surely, 2^21119123199 is an apocalyptic number.

21119123199 is a deficient number, since it is larger than the sum of its proper divisors (7222559105).

21119123199 is a wasteful number, since it uses less digits than its factorization.

21119123199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15558.

The product of its digits is 8748, while the sum is 39.

The spelling of 21119123199 in words is "twenty-one billion, one hundred nineteen million, one hundred twenty-three thousand, one hundred ninety-nine".