21434233130 has 16 divisors (see below), whose sum is σ = 38963617704. Its totient is φ = 8488804800.

The previous prime is 21434233099. The next prime is 21434233147. The reversal of 21434233130 is 3133243412.

It can be written as a sum of positive squares in 4 ways, for example, as 16625781481 + 4808451649 = 128941^2 + 69343^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21434233130.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10609997 + ... + 10612016.

Almost surely, 2^21434233130 is an apocalyptic number.

21434233130 is a deficient number, since it is larger than the sum of its proper divisors (17529384574).

21434233130 is a wasteful number, since it uses less digits than its factorization.

21434233130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21222121.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21434233130 its reverse (3133243412), we get a palindrome (24567476542).

The spelling of 21434233130 in words is "twenty-one billion, four hundred thirty-four million, two hundred thirty-three thousand, one hundred thirty".