131212011401321 has 16 divisors (see below), whose sum is σ = 136987584792960. Its totient is φ = 125442343509120.

The previous prime is 131212011401293. The next prime is 131212011401389. The reversal of 131212011401321 is 123104110212131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131212011401321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (131212011401021) 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, 439774331 + ... + 440072591.

It is an arithmetic number, because the mean of its divisors is an integer number (8561724049560).

Almost surely, 2^{131212011401321} is an apocalyptic number.

It is an amenable number.

131212011401321 is a deficient number, since it is larger than the sum of its proper divisors (5775573391639).

131212011401321 is a wasteful number, since it uses less digits than its factorization.

131212011401321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308096.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 131212011401321 its reverse (123104110212131), we get a palindrome (254316121613452).

The spelling of 131212011401321 in words is "one hundred thirty-one trillion, two hundred twelve billion, eleven million, four hundred one thousand, three hundred twenty-one".