13011229332 has 36 divisors (see below), whose sum is σ = 33259049460. Its totient is φ = 4288344192.

The previous prime is 13011229271. The next prime is 13011229333. The reversal of 13011229332 is 23392211031.

13011229332 is a `hidden beast` number, since 1 + 301 + 1 + 2 + 29 + 332 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6605788176 + 6405441156 = 81276^2 + 80034^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 13011229296 and 13011229305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011229333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2027263 + ... + 2033670.

It is an arithmetic number, because the mean of its divisors is an integer number (923862485).

Almost surely, 2^13011229332 is an apocalyptic number.

13011229332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13011229332 is an abundant number, since it is smaller than the sum of its proper divisors (20247820128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13011229332 is a wasteful number, since it uses less digits than its factorization.

13011229332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061032 (or 4061027 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 13011229332 in words is "thirteen billion, eleven million, two hundred twenty-nine thousand, three hundred thirty-two".