21133443034 has 24 divisors (see below), whose sum is σ = 34890314004. Its totient is φ = 9593337600.

The previous prime is 21133443011. The next prime is 21133443047. The reversal of 21133443034 is 43034433112.

It can be written as a sum of positive squares in 2 ways, for example, as 19445465809 + 1687977225 = 139447^2 + 41085^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21133442993 and 21133443011.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 125514 + ... + 240874.

Almost surely, 2^21133443034 is an apocalyptic number.

21133443034 is a deficient number, since it is larger than the sum of its proper divisors (13756870970).

21133443034 is a wasteful number, since it uses less digits than its factorization.

21133443034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116142 (or 116131 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21133443034 its reverse (43034433112), we get a palindrome (64167876146).

The spelling of 21133443034 in words is "twenty-one billion, one hundred thirty-three million, four hundred forty-three thousand, thirty-four".