12533002221 has 16 divisors (see below), whose sum is σ = 17121883968. Its totient is φ = 8149814400.

The previous prime is 12533002213. The next prime is 12533002247. The reversal of 12533002221 is 12220033521.

It is not a de Polignac number, because 12533002221 - 2³ = 12533002213 is a prime.

It is a super-2 number, since 2×12533002221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12533002201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843426 + ... + 858156.

It is an arithmetic number, because the mean of its divisors is an integer number (1070117748).

Almost surely, 2^12533002221 is an apocalyptic number.

It is an amenable number.

12533002221 is a deficient number, since it is larger than the sum of its proper divisors (4588881747).

12533002221 is a wasteful number, since it uses less digits than its factorization.

12533002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21692.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 12533002221 its reverse (12220033521), we get a palindrome (24753035742).

It can be divided in two parts, 1253300 and 2221, that added together give a palindrome (1255521).

The spelling of 12533002221 in words is "twelve billion, five hundred thirty-three million, two thousand, two hundred twenty-one".