1231121334411 has 6 divisors (see below), whose sum is σ = 1778286371940. Its totient is φ = 820747556268.

The previous prime is 1231121334409. The next prime is 1231121334437. The reversal of 1231121334411 is 1144331211321.

1231121334411 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 1 + 213 + 3 + 441 + 1 = 666.

It is not a de Polignac number, because 1231121334411 - 2¹ = 1231121334409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231121334451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68395629681 + ... + 68395629698.

It is an arithmetic number, because the mean of its divisors is an integer number (296381061990).

Almost surely, 2^{1231121334411} is an apocalyptic number.

1231121334411 is a deficient number, since it is larger than the sum of its proper divisors (547165037529).

1231121334411 is a wasteful number, since it uses less digits than its factorization.

1231121334411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136791259385 (or 136791259382 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

Adding to 1231121334411 its reverse (1144331211321), we get a palindrome (2375452545732).

The spelling of 1231121334411 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-one million, three hundred thirty-four thousand, four hundred eleven".