12133244421 has 48 divisors (see below), whose sum is σ = 18551332800. Its totient is φ = 7923028608.

The previous prime is 12133244413. The next prime is 12133244429. The reversal of 12133244421 is 12444233121.

12133244421 is a `hidden beast` number, since 1 + 213 + 3 + 2 + 4 + 442 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (12133244413) and next prime (12133244429).

It is not a de Polignac number, because 12133244421 - 2³ = 12133244413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133244429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2354770 + ... + 2359916.

It is an arithmetic number, because the mean of its divisors is an integer number (386486100).

Almost surely, 2^12133244421 is an apocalyptic number.

It is an amenable number.

12133244421 is a deficient number, since it is larger than the sum of its proper divisors (6418088379).

12133244421 is an equidigital number, since it uses as much as digits as its factorization.

12133244421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360 (or 5348 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 12133244421 its reverse (12444233121), we get a palindrome (24577477542).

The spelling of 12133244421 in words is "twelve billion, one hundred thirty-three million, two hundred forty-four thousand, four hundred twenty-one".