100343123121 has 16 divisors (see below), whose sum is σ = 134284288320. Its totient is φ = 66648813120.

The previous prime is 100343123119. The next prime is 100343123143. The reversal of 100343123121 is 121321343001.

It is not a de Polignac number, because 100343123121 - 2¹ = 100343123119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100343123191) 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, 3687915 + ... + 3715023.

It is an arithmetic number, because the mean of its divisors is an integer number (8392768020).

Almost surely, 2^100343123121 is an apocalyptic number.

It is an amenable number.

100343123121 is a deficient number, since it is larger than the sum of its proper divisors (33941165199).

100343123121 is a wasteful number, since it uses less digits than its factorization.

100343123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31616.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 100343123121 its reverse (121321343001), we get a palindrome (221664466122).

The spelling of 100343123121 in words is "one hundred billion, three hundred forty-three million, one hundred twenty-three thousand, one hundred twenty-one".