21011110113033 has 6 divisors (see below), whose sum is σ = 30349381274394. Its totient is φ = 14007406742016.

The previous prime is 21011110113031. The next prime is 21011110113067. The reversal of 21011110113033 is 33031101111012.

It can be written as a sum of positive squares in only one way, i.e., 17818841810169 + 3192268302864 = 4221237^2 + 1786692^2 .

It is not a de Polignac number, because 21011110113033 - 2¹ = 21011110113031 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21011110112997 and 21011110113015.

It is not an unprimeable number, because it can be changed into a prime (21011110113031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1167283895160 + ... + 1167283895177.

It is an arithmetic number, because the mean of its divisors is an integer number (5058230212399).

Almost surely, 2^{21011110113033} is an apocalyptic number.

It is an amenable number.

21011110113033 is a deficient number, since it is larger than the sum of its proper divisors (9338271161361).

21011110113033 is a wasteful number, since it uses less digits than its factorization.

21011110113033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334567790343 (or 2334567790340 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 21011110113033 its reverse (33031101111012), we get a palindrome (54042211224045).

The spelling of 21011110113033 in words is "twenty-one trillion, eleven billion, one hundred ten million, one hundred thirteen thousand, thirty-three".