100000121200123 has 4 divisors (see below), whose sum is σ = 100179654631920. Its totient is φ = 99820587768328.

The previous prime is 100000121200069. The next prime is 100000121200127. The reversal of 100000121200123 is 321002121000001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100000121200123 - 2⁹ = 100000121199611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100000121200127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89766715063 + ... + 89766716176.

It is an arithmetic number, because the mean of its divisors is an integer number (25044913657980).

Almost surely, 2^{100000121200123} is an apocalyptic number.

100000121200123 is a deficient number, since it is larger than the sum of its proper divisors (179533431797).

100000121200123 is an equidigital number, since it uses as much as digits as its factorization.

100000121200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179533431796.

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

Adding to 100000121200123 its reverse (321002121000001), we get a palindrome (421002242200124).

The spelling of 100000121200123 in words is "one hundred trillion, one hundred twenty-one million, two hundred thousand, one hundred twenty-three".