21132020033 has 8 divisors (see below), whose sum is σ = 21454976928. Its totient is φ = 20810690784.

The previous prime is 21132020023. The next prime is 21132020047. The reversal of 21132020033 is 33002023112.

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

It is a cyclic number.

It is not a de Polignac number, because 21132020033 - 2¹⁰ = 21132019009 is a prime.

It is a super-2 number, since 2×21132020033² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21132019993 and 21132020020.

It is not an unprimeable number, because it can be changed into a prime (21132020023) 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, 380735 + ... + 432692.

It is an arithmetic number, because the mean of its divisors is an integer number (2681872116).

Almost surely, 2^21132020033 is an apocalyptic number.

It is an amenable number.

21132020033 is a deficient number, since it is larger than the sum of its proper divisors (322956895).

21132020033 is an equidigital number, since it uses as much as digits as its factorization.

21132020033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813823.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21132020033 its reverse (33002023112), we get a palindrome (54134043145).

The spelling of 21132020033 in words is "twenty-one billion, one hundred thirty-two million, twenty thousand, thirty-three".