100312201123 has 2 divisors, whose sum is σ = 100312201124. Its totient is φ = 100312201122.

The previous prime is 100312201117. The next prime is 100312201237. The reversal of 100312201123 is 321102213001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100312201123 - 2¹³ = 100312192931 is a prime.

It is a super-2 number, since 2×100312201123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100312201097 and 100312201106.

It is not a weakly prime, because it can be changed into another prime (100312201103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50156100561 + 50156100562.

It is an arithmetic number, because the mean of its divisors is an integer number (50156100562).

Almost surely, 2^100312201123 is an apocalyptic number.

100312201123 is a deficient number, since it is larger than the sum of its proper divisors (1).

100312201123 is an equidigital number, since it uses as much as digits as its factorization.

100312201123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 100312201123 its reverse (321102213001), we get a palindrome (421414414124).

The spelling of 100312201123 in words is "one hundred billion, three hundred twelve million, two hundred one thousand, one hundred twenty-three".