12131303123011 has 4 divisors (see below), whose sum is σ = 12131316166024. Its totient is φ = 12131290080000.

The previous prime is 12131303122999. The next prime is 12131303123021. The reversal of 12131303123011 is 11032130313121.

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

It is a cyclic number.

It is not a de Polignac number, because 12131303123011 - 2¹⁵ = 12131303090243 is a prime.

It is a super-2 number, since 2×12131303123011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131303123021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5009505 + ... + 7025506.

It is an arithmetic number, because the mean of its divisors is an integer number (3032829041506).

Almost surely, 2^{12131303123011} is an apocalyptic number.

12131303123011 is a deficient number, since it is larger than the sum of its proper divisors (13043013).

12131303123011 is a wasteful number, since it uses less digits than its factorization.

12131303123011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13043012.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 12131303123011 its reverse (11032130313121), we get a palindrome (23163433436132).

The spelling of 12131303123011 in words is "twelve trillion, one hundred thirty-one billion, three hundred three million, one hundred twenty-three thousand, eleven".