1331042366121 has 16 divisors (see below), whose sum is σ = 1951905010944. Its totient is φ = 801675270144.

The previous prime is 1331042366117. The next prime is 1331042366167. The reversal of 1331042366121 is 1216632401331.

It is not a de Polignac number, because 1331042366121 - 2² = 1331042366117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1331042366921) 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, 363075736 + ... + 363079401.

It is an arithmetic number, because the mean of its divisors is an integer number (121994063184).

Almost surely, 2^{1331042366121} is an apocalyptic number.

It is an amenable number.

1331042366121 is a deficient number, since it is larger than the sum of its proper divisors (620862644823).

1331042366121 is a wasteful number, since it uses less digits than its factorization.

1331042366121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726155200.

The product of its (nonzero) digits is 15552, while the sum is 33.

Adding to 1331042366121 its reverse (1216632401331), we get a palindrome (2547674767452).

The spelling of 1331042366121 in words is "one trillion, three hundred thirty-one billion, forty-two million, three hundred sixty-six thousand, one hundred twenty-one".