21168010 has 8 divisors (see below), whose sum is σ = 38102436. Its totient is φ = 8467200.

The previous prime is 21167989. The next prime is 21168023. The reversal of 21168010 is 1086112.

It can be written as a sum of positive squares in 2 ways, for example, as 21095649 + 72361 = 4593^2 + 269^2 .

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

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, 1058391 + ... + 1058410.

Almost surely, 2^21168010 is an apocalyptic number.

21168010 is a deficient number, since it is larger than the sum of its proper divisors (16934426).

21168010 is a wasteful number, since it uses less digits than its factorization.

21168010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116808.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 21168010 is about 4600.8705697944. The cubic root of 21168010 is about 276.6262210839.

The spelling of 21168010 in words is "twenty-one million, one hundred sixty-eight thousand, ten".