21020132113033 has 4 divisors (see below), whose sum is σ = 21256313372820. Its totient is φ = 20783950853248.

The previous prime is 21020132112943. The next prime is 21020132113051. The reversal of 21020132113033 is 33031123102012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3299425210624 + 17720706902409 = 1816432^2 + 4209597^2 .

It is a cyclic number.

It is not a de Polignac number, because 21020132113033 - 2²¹ = 21020130015881 is a prime.

It is a super-2 number, since 2×21020132113033² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21020132112995 and 21020132113013.

It is not an unprimeable number, because it can be changed into a prime (21020132113933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118090629760 + ... + 118090629937.

It is an arithmetic number, because the mean of its divisors is an integer number (5314078343205).

Almost surely, 2^{21020132113033} is an apocalyptic number.

It is an amenable number.

21020132113033 is a deficient number, since it is larger than the sum of its proper divisors (236181259787).

21020132113033 is an equidigital number, since it uses as much as digits as its factorization.

21020132113033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236181259786.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21020132113033 its reverse (33031123102012), we get a palindrome (54051255215045).

The spelling of 21020132113033 in words is "twenty-one trillion, twenty billion, one hundred thirty-two million, one hundred thirteen thousand, thirty-three".