210131224142123 has 4 divisors (see below), whose sum is σ = 210131253254520. Its totient is φ = 210131195029728.

The previous prime is 210131224142087. The next prime is 210131224142143. The reversal of 210131224142123 is 321241422131012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 210131224142123 - 2¹⁰ = 210131224141099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210131224142143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5292836 + ... + 21172542.

It is an arithmetic number, because the mean of its divisors is an integer number (52532813313630).

Almost surely, 2^{210131224142123} is an apocalyptic number.

210131224142123 is a deficient number, since it is larger than the sum of its proper divisors (29112397).

210131224142123 is a wasteful number, since it uses less digits than its factorization.

210131224142123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29112396.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 210131224142123 its reverse (321241422131012), we get a palindrome (531372646273135).

The spelling of 210131224142123 in words is "two hundred ten trillion, one hundred thirty-one billion, two hundred twenty-four million, one hundred forty-two thousand, one hundred twenty-three".