21111322322 has 4 divisors (see below), whose sum is σ = 31666983486. Its totient is φ = 10555661160.

The previous prime is 21111322301. The next prime is 21111322373. The reversal of 21111322322 is 22322311112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17223675121 + 3887647201 = 131239^2 + 62351^2 .

It is a super-4 number, since 4×21111322322⁴ (a number of 42 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21111322294 and 21111322303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5277830579 + ... + 5277830582.

Almost surely, 2^21111322322 is an apocalyptic number.

21111322322 is a deficient number, since it is larger than the sum of its proper divisors (10555661164).

21111322322 is a wasteful number, since it uses less digits than its factorization.

21111322322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555661163.

The product of its digits is 288, while the sum is 20.

Adding to 21111322322 its reverse (22322311112), we get a palindrome (43433633434).

The spelling of 21111322322 in words is "twenty-one billion, one hundred eleven million, three hundred twenty-two thousand, three hundred twenty-two".