12210013031123 has 2 divisors, whose sum is σ = 12210013031124. Its totient is φ = 12210013031122.

The previous prime is 12210013031119. The next prime is 12210013031129. The reversal of 12210013031123 is 32113031001221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12210013031123 - 2² = 12210013031119 is a prime.

It is a super-2 number, since 2×12210013031123² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12210013031095 and 12210013031104.

It is not a weakly prime, because it can be changed into another prime (12210013031129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105006515561 + 6105006515562.

It is an arithmetic number, because the mean of its divisors is an integer number (6105006515562).

Almost surely, 2^{12210013031123} is an apocalyptic number.

12210013031123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210013031123 is an equidigital number, since it uses as much as digits as its factorization.

12210013031123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12210013031123 its reverse (32113031001221), we get a palindrome (44323044032344).

The spelling of 12210013031123 in words is "twelve trillion, two hundred ten billion, thirteen million, thirty-one thousand, one hundred twenty-three".