21111033323234 has 16 divisors (see below), whose sum is σ = 33624272057688. Its totient is φ = 9906460557312.

The previous prime is 21111033323197. The next prime is 21111033323243. The reversal of 21111033323234 is 43232333011112.

It can be written as a sum of positive squares in 4 ways, for example, as 13900481872225 + 7210551451009 = 3728335^2 + 2685247^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21111033323197 and 21111033323206.

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 7 ways as a sum of consecutive naturals, for example, 879467807 + ... + 879491810.

Almost surely, 2^{21111033323234} is an apocalyptic number.

21111033323234 is a deficient number, since it is larger than the sum of its proper divisors (12513238734454).

21111033323234 is a wasteful number, since it uses less digits than its factorization.

21111033323234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758959989.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 21111033323234 its reverse (43232333011112), we get a palindrome (64343366334346).

The spelling of 21111033323234 in words is "twenty-one trillion, one hundred eleven billion, thirty-three million, three hundred twenty-three thousand, two hundred thirty-four".