21003303422 has 4 divisors (see below), whose sum is σ = 31504955136. Its totient is φ = 10501651710.

The previous prime is 21003303421. The next prime is 21003303439. The reversal of 21003303422 is 22430330012.

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

It is a super-2 number, since 2×21003303422² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21003303394 and 21003303403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003303421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5250825854 + ... + 5250825857.

It is an arithmetic number, because the mean of its divisors is an integer number (7876238784).

Almost surely, 2^21003303422 is an apocalyptic number.

21003303422 is a deficient number, since it is larger than the sum of its proper divisors (10501651714).

21003303422 is a wasteful number, since it uses less digits than its factorization.

21003303422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10501651713.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21003303422 its reverse (22430330012), we get a palindrome (43433633434).

The spelling of 21003303422 in words is "twenty-one billion, three million, three hundred three thousand, four hundred twenty-two".