12121110103031 has 4 divisors (see below), whose sum is σ = 12130499035464. Its totient is φ = 12111721170600.

The previous prime is 12121110102961. The next prime is 12121110103049. The reversal of 12121110103031 is 13030101112121.

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 12121110103031 - 2¹⁰ = 12121110102007 is a prime.

It is a super-2 number, since 2×12121110103031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121110103331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4694464280 + ... + 4694466861.

It is an arithmetic number, because the mean of its divisors is an integer number (3032624758866).

Almost surely, 2^{12121110103031} is an apocalyptic number.

12121110103031 is a deficient number, since it is larger than the sum of its proper divisors (9388932433).

12121110103031 is an equidigital number, since it uses as much as digits as its factorization.

12121110103031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9388932432.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 12121110103031 its reverse (13030101112121), we get a palindrome (25151211215152).

The spelling of 12121110103031 in words is "twelve trillion, one hundred twenty-one billion, one hundred ten million, one hundred three thousand, thirty-one".