21126095 has 4 divisors (see below), whose sum is σ = 25351320. Its totient is φ = 16900872.

The previous prime is 21126089. The next prime is 21126103. The reversal of 21126095 is 59062112.

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 21126095 - 2⁶ = 21126031 is a prime.

It is a congruent number.

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, 2112605 + ... + 2112614.

It is an arithmetic number, because the mean of its divisors is an integer number (6337830).

Almost surely, 2^21126095 is an apocalyptic number.

21126095 is a deficient number, since it is larger than the sum of its proper divisors (4225225).

21126095 is an equidigital number, since it uses as much as digits as its factorization.

21126095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225224.

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

The square root of 21126095 is about 4596.3131964652. The cubic root of 21126095 is about 276.4435169394.

The spelling of 21126095 in words is "twenty-one million, one hundred twenty-six thousand, ninety-five".