21214095 has 32 divisors (see below), whose sum is σ = 38983680. Its totient is φ = 9649920.

The previous prime is 21214087. The next prime is 21214111. The reversal of 21214095 is 59041212.

It is not a de Polignac number, because 21214095 - 2³ = 21214087 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29146 + ... + 29864.

It is an arithmetic number, because the mean of its divisors is an integer number (1218240).

Almost surely, 2^21214095 is an apocalyptic number.

21214095 is a deficient number, since it is larger than the sum of its proper divisors (17769585).

21214095 is a wasteful number, since it uses less digits than its factorization.

21214095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 21214095 is about 4605.8761381522. The cubic root of 21214095 is about 276.8268237715.

It can be divided in two parts, 2121 and 4095, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 21214095 in words is "twenty-one million, two hundred fourteen thousand, ninety-five".