21032214 has 32 divisors (see below), whose sum is σ = 48212736. Its totient is φ = 5991840.

The previous prime is 21032201. The next prime is 21032237. The reversal of 21032214 is 41223012.

It is a junction number, because it is equal to n+sod(n) for n = 21032193 and 21032202.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 23544 + ... + 24420.

It is an arithmetic number, because the mean of its divisors is an integer number (1506648).

Almost surely, 2^21032214 is an apocalyptic number.

21032214 is an abundant number, since it is smaller than the sum of its proper divisors (27180522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21032214 is a wasteful number, since it uses less digits than its factorization.

21032214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21032214 is about 4586.0891836073. The cubic root of 21032214 is about 276.0334185538.

Adding to 21032214 its reverse (41223012), we get a palindrome (62255226).

The spelling of 21032214 in words is "twenty-one million, thirty-two thousand, two hundred fourteen".