10131212123 has 2 divisors, whose sum is σ = 10131212124. Its totient is φ = 10131212122.

The previous prime is 10131212099. The next prime is 10131212141. The reversal of 10131212123 is 32121213101.

It is a strong prime.

It is an emirp because it is prime and its reverse (32121213101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10131212123 - 2¹⁶ = 10131146587 is a prime.

It is not a weakly prime, because it can be changed into another prime (10131212153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5065606061 + 5065606062.

It is an arithmetic number, because the mean of its divisors is an integer number (5065606062).

Almost surely, 2^10131212123 is an apocalyptic number.

10131212123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10131212123 is an equidigital number, since it uses as much as digits as its factorization.

10131212123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10131212123 its reverse (32121213101), we get a palindrome (42252425224).

The spelling of 10131212123 in words is "ten billion, one hundred thirty-one million, two hundred twelve thousand, one hundred twenty-three".