21119158 has 8 divisors (see below), whose sum is σ = 31791528. Its totient is φ = 10521984.

The previous prime is 21119143. The next prime is 21119159. The reversal of 21119158 is 85191112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21119159) 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, 18091 + ... + 19222.

It is an arithmetic number, because the mean of its divisors is an integer number (3973941).

Almost surely, 2^21119158 is an apocalyptic number.

21119158 is a deficient number, since it is larger than the sum of its proper divisors (10672370).

21119158 is a wasteful number, since it uses less digits than its factorization.

21119158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37598.

The product of its digits is 720, while the sum is 28.

The square root of 21119158 is about 4595.5585079509. The cubic root of 21119158 is about 276.4132558080.

The spelling of 21119158 in words is "twenty-one million, one hundred nineteen thousand, one hundred fifty-eight".