21103303322 has 4 divisors (see below), whose sum is σ = 31654954986. Its totient is φ = 10551651660.

The previous prime is 21103303303. The next prime is 21103303357. The reversal of 21103303322 is 22330330112.

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., 20041781761 + 1061521561 = 141569^2 + 32581^2 .

It is a super-2 number, since 2×21103303322² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21103303294 and 21103303303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275825829 + ... + 5275825832.

Almost surely, 2^21103303322 is an apocalyptic number.

21103303322 is a deficient number, since it is larger than the sum of its proper divisors (10551651664).

21103303322 is a wasteful number, since it uses less digits than its factorization.

21103303322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551651663.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21103303322 its reverse (22330330112), we get a palindrome (43433633434).

The spelling of 21103303322 in words is "twenty-one billion, one hundred three million, three hundred three thousand, three hundred twenty-two".