21122434230 has 32 divisors (see below), whose sum is σ = 50829777504. Its totient is φ = 5617545216.

The previous prime is 21122434117. The next prime is 21122434241. The reversal of 21122434230 is 3243422112.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21122434230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 932619 + ... + 954998.

It is an arithmetic number, because the mean of its divisors is an integer number (1588430547).

Almost surely, 2^21122434230 is an apocalyptic number.

21122434230 is an abundant number, since it is smaller than the sum of its proper divisors (29707343274).

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

21122434230 is a wasteful number, since it uses less digits than its factorization.

21122434230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888000.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21122434230 its reverse (3243422112), we get a palindrome (24365856342).

It can be divided in two parts, 2112 and 2434230, that added together give a palindrome (2436342).

The spelling of 21122434230 in words is "twenty-one billion, one hundred twenty-two million, four hundred thirty-four thousand, two hundred thirty".