100200121123 has 2 divisors, whose sum is σ = 100200121124. Its totient is φ = 100200121122.

The previous prime is 100200121033. The next prime is 100200121181. The reversal of 100200121123 is 321121002001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100200121123 is a prime.

It is a super-2 number, since 2×100200121123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100200121183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50100060561 + 50100060562.

It is an arithmetic number, because the mean of its divisors is an integer number (50100060562).

Almost surely, 2^100200121123 is an apocalyptic number.

100200121123 is a deficient number, since it is larger than the sum of its proper divisors (1).

100200121123 is an equidigital number, since it uses as much as digits as its factorization.

100200121123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 100200121123 its reverse (321121002001), we get a palindrome (421321123124).

The spelling of 100200121123 in words is "one hundred billion, two hundred million, one hundred twenty-one thousand, one hundred twenty-three".