16221034 has 16 divisors (see below), whose sum is σ = 25353000. Its totient is φ = 7774144.

The previous prime is 16221031. The next prime is 16221061. The reversal of 16221034 is 43012261.

It can be written as a sum of positive squares in 4 ways, for example, as 12006225 + 4214809 = 3465^2 + 2053^2 .

It is not an unprimeable number, because it can be changed into a prime (16221031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7704 + ... + 9580.

Almost surely, 2^16221034 is an apocalyptic number.

16221034 is a deficient number, since it is larger than the sum of its proper divisors (9131966).

16221034 is a wasteful number, since it uses less digits than its factorization.

16221034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 16221034 is about 4027.5344815408. The cubic root of 16221034 is about 253.1392631093.

Adding to 16221034 its reverse (43012261), we get a palindrome (59233295).

The spelling of 16221034 in words is "sixteen million, two hundred twenty-one thousand, thirty-four".