21111302322 has 40 divisors (see below), whose sum is σ = 51605410032. Its totient is φ = 6397363800.

The previous prime is 21111302279. The next prime is 21111302369. The reversal of 21111302322 is 22320311112.

21111302322 is a `hidden beast` number, since 211 + 1 + 130 + 2 + 322 = 666.

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 = 21111302295 and 21111302304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5921704 + ... + 5925267.

Almost surely, 2^21111302322 is an apocalyptic number.

21111302322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21111302322 is an abundant number, since it is smaller than the sum of its proper divisors (30494107710).

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

21111302322 is a wasteful number, since it uses less digits than its factorization.

21111302322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11846996 (or 11846987 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21111302322 its reverse (22320311112), we get a palindrome (43431613434).

The spelling of 21111302322 in words is "twenty-one billion, one hundred eleven million, three hundred two thousand, three hundred twenty-two".