21031200033 has 8 divisors (see below), whose sum is σ = 28246283808. Its totient is φ = 13918458144.

The previous prime is 21031200019. The next prime is 21031200061. The reversal of 21031200033 is 33000213012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21031200033 - 2¹⁶ = 21031134497 is a prime.

It is a super-2 number, since 2×21031200033² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21031199985 and 21031200021.

It is not an unprimeable number, because it can be changed into a prime (21031202033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25584991 + ... + 25585812.

It is an arithmetic number, because the mean of its divisors is an integer number (3530785476).

Almost surely, 2^21031200033 is an apocalyptic number.

It is an amenable number.

21031200033 is a deficient number, since it is larger than the sum of its proper divisors (7215083775).

21031200033 is a wasteful number, since it uses less digits than its factorization.

21031200033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51170943.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21031200033 its reverse (33000213012), we get a palindrome (54031413045).

The spelling of 21031200033 in words is "twenty-one billion, thirty-one million, two hundred thousand, thirty-three".