21122210322 has 32 divisors (see below), whose sum is σ = 46968850560. Its totient is φ = 7036146000.

The previous prime is 21122210321. The next prime is 21122210327. The reversal of 21122210322 is 22301222112.

It is a super-2 number, since 2×21122210322² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21122210295 and 21122210304.

It is not an unprimeable number, because it can be changed into a prime (21122210321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43429 + ... + 210072.

It is an arithmetic number, because the mean of its divisors is an integer number (1467776580).

Almost surely, 2^21122210322 is an apocalyptic number.

21122210322 is an abundant number, since it is smaller than the sum of its proper divisors (25846640238).

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

21122210322 is a wasteful number, since it uses less digits than its factorization.

21122210322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255055 (or 255049 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 21122210322 its reverse (22301222112), we get a palindrome (43423432434).

The spelling of 21122210322 in words is "twenty-one billion, one hundred twenty-two million, two hundred ten thousand, three hundred twenty-two".