12103020440231 has 16 divisors (see below), whose sum is σ = 14280823154688. Its totient is φ = 10037539807200.

The previous prime is 12103020440227. The next prime is 12103020440311. The reversal of 12103020440231 is 13204402030121.

It is a cyclic number.

It is not a de Polignac number, because 12103020440231 - 2² = 12103020440227 is a prime.

It is a super-2 number, since 2×12103020440231² (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 = 12103020440197 and 12103020440206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103020440221) 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, 3896300 + ... + 6275921.

It is an arithmetic number, because the mean of its divisors is an integer number (892551447168).

Almost surely, 2^{12103020440231} is an apocalyptic number.

12103020440231 is a deficient number, since it is larger than the sum of its proper divisors (2177802714457).

12103020440231 is a wasteful number, since it uses less digits than its factorization.

12103020440231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10177742.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12103020440231 its reverse (13204402030121), we get a palindrome (25307422470352).

The spelling of 12103020440231 in words is "twelve trillion, one hundred three billion, twenty million, four hundred forty thousand, two hundred thirty-one".