21794122 has 12 divisors (see below), whose sum is σ = 38028690. Its totient is φ = 9340296.

The previous prime is 21794107. The next prime is 21794137. The reversal of 21794122 is 22149712.

It is an interprime number because it is at equal distance from previous prime (21794107) and next prime (21794137).

It can be written as a sum of positive squares in only one way, i.e., 20259001 + 1535121 = 4501^2 + 1239^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111097 + ... + 111292.

Almost surely, 2^21794122 is an apocalyptic number.

21794122 is a deficient number, since it is larger than the sum of its proper divisors (16234568).

21794122 is a wasteful number, since it uses less digits than its factorization.

21794122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222405 (or 222398 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 21794122 is about 4668.4175048939. The cubic root of 21794122 is about 279.3271343374.

The spelling of 21794122 in words is "twenty-one million, seven hundred ninety-four thousand, one hundred twenty-two".