21123000043010 has 32 divisors (see below), whose sum is σ = 38901354382080. Its totient is φ = 8254311916032.

The previous prime is 21123000043007. The next prime is 21123000043027. The reversal of 21123000043010 is 1034000032112.

It is a super-2 number, since 2×21123000043010² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21123000043010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40823855 + ... + 41338034.

It is an arithmetic number, because the mean of its divisors is an integer number (1215667324440).

Almost surely, 2^{21123000043010} is an apocalyptic number.

21123000043010 is a deficient number, since it is larger than the sum of its proper divisors (17778354339070).

21123000043010 is a wasteful number, since it uses less digits than its factorization.

21123000043010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82162490.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21123000043010 its reverse (1034000032112), we get a palindrome (22157000075122).

The spelling of 21123000043010 in words is "twenty-one trillion, one hundred twenty-three billion, forty-three thousand, ten".