12111120010001 has 4 divisors (see below), whose sum is σ = 12126090492900. Its totient is φ = 12096149527104.

The previous prime is 12111120009979. The next prime is 12111120010063. The reversal of 12111120010001 is 10001002111121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8743399541776 + 3367720468225 = 2956924^2 + 1835135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111120010001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111120012001) 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, 7485240236 + ... + 7485241853.

It is an arithmetic number, because the mean of its divisors is an integer number (3031522623225).

Almost surely, 2^{12111120010001} is an apocalyptic number.

It is an amenable number.

12111120010001 is a deficient number, since it is larger than the sum of its proper divisors (14970482899).

12111120010001 is an equidigital number, since it uses as much as digits as its factorization.

12111120010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14970482898.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12111120010001 its reverse (10001002111121), we get a palindrome (22112122121122).

The spelling of 12111120010001 in words is "twelve trillion, one hundred eleven billion, one hundred twenty million, ten thousand, one".