21110013321033 has 16 divisors (see below), whose sum is σ = 34642073142656. Its totient is φ = 11134952081280.

The previous prime is 21110013321017. The next prime is 21110013321043. The reversal of 21110013321033 is 33012331001112.

It is a happy number.

It is not a de Polignac number, because 21110013321033 - 2⁴ = 21110013321017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21110013321043) 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 in 15 ways as a sum of consecutive naturals, for example, 38663027788 + ... + 38663028333.

It is an arithmetic number, because the mean of its divisors is an integer number (2165129571416).

Almost surely, 2^{21110013321033} is an apocalyptic number.

It is an amenable number.

21110013321033 is a deficient number, since it is larger than the sum of its proper divisors (13532059821623).

21110013321033 is a wasteful number, since it uses less digits than its factorization.

21110013321033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77326056144.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21110013321033 its reverse (33012331001112), we get a palindrome (54122344322145).

The spelling of 21110013321033 in words is "twenty-one trillion, one hundred ten billion, thirteen million, three hundred twenty-one thousand, thirty-three".