21030122334 has 16 divisors (see below), whose sum is σ = 45295648272. Its totient is φ = 6470806848.

The previous prime is 21030122327. The next prime is 21030122339. The reversal of 21030122334 is 43322103012.

It is a self number, because there is not a number n which added to its sum of digits gives 21030122334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030122339) 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, 134808399 + ... + 134808554.

It is an arithmetic number, because the mean of its divisors is an integer number (2830978017).

Almost surely, 2^21030122334 is an apocalyptic number.

21030122334 is an abundant number, since it is smaller than the sum of its proper divisors (24265525938).

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

21030122334 is a wasteful number, since it uses less digits than its factorization.

21030122334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269616971.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21030122334 its reverse (43322103012), we get a palindrome (64352225346).

The spelling of 21030122334 in words is "twenty-one billion, thirty million, one hundred twenty-two thousand, three hundred thirty-four".