21214010 has 16 divisors (see below), whose sum is σ = 38416896. Its totient is φ = 8434128.

The previous prime is 21214003. The next prime is 21214021. The reversal of 21214010 is 1041212.

It is a junction number, because it is equal to n+sod(n) for n = 21213982 and 21214000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4682 + ... + 8021.

It is an arithmetic number, because the mean of its divisors is an integer number (2401056).

Almost surely, 2^21214010 is an apocalyptic number.

21214010 is a deficient number, since it is larger than the sum of its proper divisors (17202886).

21214010 is a wasteful number, since it uses less digits than its factorization.

21214010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12877.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 21214010 is about 4605.8669107997. The cubic root of 21214010 is about 276.8264540439.

Adding to 21214010 its reverse (1041212), we get a palindrome (22255222).

The spelling of 21214010 in words is "twenty-one million, two hundred fourteen thousand, ten".