12123031110211 has 32 divisors (see below), whose sum is σ = 14124258109440. Its totient is φ = 10191374899200.

The previous prime is 12123031110143. The next prime is 12123031110233. The reversal of 12123031110211 is 11201113032121.

It is a cyclic number.

It is not a de Polignac number, because 12123031110211 - 2⁹ = 12123031109699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123031110811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38166931 + ... + 38483251.

It is an arithmetic number, because the mean of its divisors is an integer number (441383065920).

Almost surely, 2^{12123031110211} is an apocalyptic number.

12123031110211 is a deficient number, since it is larger than the sum of its proper divisors (2001226999229).

12123031110211 is a wasteful number, since it uses less digits than its factorization.

12123031110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316915.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 12123031110211 its reverse (11201113032121), we get a palindrome (23324144142332).

The spelling of 12123031110211 in words is "twelve trillion, one hundred twenty-three billion, thirty-one million, one hundred ten thousand, two hundred eleven".