1331242224406 has 4 divisors (see below), whose sum is σ = 1996863336612. Its totient is φ = 665621112202.

The previous prime is 1331242224401. The next prime is 1331242224413. The reversal of 1331242224406 is 6044222421331.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331242224401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332810556100 + ... + 332810556103.

It is an arithmetic number, because the mean of its divisors is an integer number (499215834153).

Almost surely, 2^{1331242224406} is an apocalyptic number.

1331242224406 is a deficient number, since it is larger than the sum of its proper divisors (665621112206).

1331242224406 is an equidigital number, since it uses as much as digits as its factorization.

1331242224406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665621112205.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 1331242224406 its reverse (6044222421331), we get a palindrome (7375464645737).

The spelling of 1331242224406 in words is "one trillion, three hundred thirty-one billion, two hundred forty-two million, two hundred twenty-four thousand, four hundred six".