21032321030 has 64 divisors (see below), whose sum is σ = 43621493760. Its totient is φ = 7152123264.

The previous prime is 21032321027. The next prime is 21032321041. The reversal of 21032321030 is 3012323012.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5653511 + ... + 5657229.

It is an arithmetic number, because the mean of its divisors is an integer number (681585840).

Almost surely, 2^21032321030 is an apocalyptic number.

21032321030 is an abundant number, since it is smaller than the sum of its proper divisors (22589172730).

21032321030 is a wasteful number, since it uses less digits than its factorization.

21032321030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21032321030 its reverse (3012323012), we get a palindrome (24044644042).

The spelling of 21032321030 in words is "twenty-one billion, thirty-two million, three hundred twenty-one thousand, thirty".