21134195 has 4 divisors (see below), whose sum is σ = 25361040. Its totient is φ = 16907352.

The previous prime is 21134173. The next prime is 21134221. The reversal of 21134195 is 59143112.

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 21134195 - 2⁸ = 21133939 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2113415 + ... + 2113424.

It is an arithmetic number, because the mean of its divisors is an integer number (6340260).

Almost surely, 2^21134195 is an apocalyptic number.

21134195 is a deficient number, since it is larger than the sum of its proper divisors (4226845).

21134195 is an equidigital number, since it uses as much as digits as its factorization.

21134195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4226844.

The product of its digits is 1080, while the sum is 26.

The square root of 21134195 is about 4597.1942530200. The cubic root of 21134195 is about 276.4788430195.

The spelling of 21134195 in words is "twenty-one million, one hundred thirty-four thousand, one hundred ninety-five".