12101211123031 has 16 divisors (see below), whose sum is σ = 12334907428864. Its totient is φ = 11870440856064.

The previous prime is 12101211123019. The next prime is 12101211123047. The reversal of 12101211123031 is 13032111210121.

It is not a de Polignac number, because 12101211123031 - 2²¹ = 12101209025879 is a prime.

It is a super-2 number, since 2×12101211123031² (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 (12101211123011) 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, 2480860 + ... + 5509726.

It is an arithmetic number, because the mean of its divisors is an integer number (770931714304).

Almost surely, 2^{12101211123031} is an apocalyptic number.

12101211123031 is a deficient number, since it is larger than the sum of its proper divisors (233696305833).

12101211123031 is a wasteful number, since it uses less digits than its factorization.

12101211123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029350.

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

Adding to 12101211123031 its reverse (13032111210121), we get a palindrome (25133322333152).

The spelling of 12101211123031 in words is "twelve trillion, one hundred one billion, two hundred eleven million, one hundred twenty-three thousand, thirty-one".