21122322330 has 32 divisors (see below), whose sum is σ = 50829508224. Its totient is φ = 5617515456.

The previous prime is 21122322307. The next prime is 21122322337. The reversal of 21122322330 is 3322322112.

It is a happy number.

It is a super-3 number, since 3×21122322330³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 21122322297 and 21122322306.

It is not an unprimeable number, because it can be changed into a prime (21122322337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 932614 + ... + 954993.

It is an arithmetic number, because the mean of its divisors is an integer number (1588422132).

Almost surely, 2^21122322330 is an apocalyptic number.

21122322330 is an abundant number, since it is smaller than the sum of its proper divisors (29707185894).

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

21122322330 is a wasteful number, since it uses less digits than its factorization.

21122322330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887990.

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

Adding to 21122322330 its reverse (3322322112), we get a palindrome (24444644442).

The spelling of 21122322330 in words is "twenty-one billion, one hundred twenty-two million, three hundred twenty-two thousand, three hundred thirty".