21432221410 has 32 divisors (see below), whose sum is σ = 39250008000. Its totient is φ = 8423688000.

The previous prime is 21432221303. The next prime is 21432221413. The reversal of 21432221410 is 1412223412.

It is a super-2 number, since 2×21432221410² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21432221413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1496785 + ... + 1511035.

It is an arithmetic number, because the mean of its divisors is an integer number (1226562750).

Almost surely, 2^21432221410 is an apocalyptic number.

21432221410 is a deficient number, since it is larger than the sum of its proper divisors (17817786590).

21432221410 is a wasteful number, since it uses less digits than its factorization.

21432221410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16866.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21432221410 its reverse (1412223412), we get a palindrome (22844444822).

The spelling of 21432221410 in words is "twenty-one billion, four hundred thirty-two million, two hundred twenty-one thousand, four hundred ten".