12120123210031 has 16 divisors (see below), whose sum is σ = 12767351549184. Its totient is φ = 11482952209344.

The previous prime is 12120123210029. The next prime is 12120123210089. The reversal of 12120123210031 is 13001232102121.

It is a cyclic number.

It is not a de Polignac number, because 12120123210031 - 2¹ = 12120123210029 is a prime.

It is a super-2 number, since 2×12120123210031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120123209990 and 12120123210008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120123219031) 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, 14903956 + ... + 15696118.

It is an arithmetic number, because the mean of its divisors is an integer number (797959471824).

Almost surely, 2^{12120123210031} is an apocalyptic number.

12120123210031 is a deficient number, since it is larger than the sum of its proper divisors (647228339153).

12120123210031 is a wasteful number, since it uses less digits than its factorization.

12120123210031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798510.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12120123210031 its reverse (13001232102121), we get a palindrome (25121355312152).

The spelling of 12120123210031 in words is "twelve trillion, one hundred twenty billion, one hundred twenty-three million, two hundred ten thousand, thirty-one".