202100012110123 has 4 divisors (see below), whose sum is σ = 202138647177888. Its totient is φ = 202061377042360.

The previous prime is 202100012110111. The next prime is 202100012110151. The reversal of 202100012110123 is 321011210001202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202100012110123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202100012110097 and 202100012110106.

It is not an unprimeable number, because it can be changed into a prime (202100012110163) 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, 19317526036 + ... + 19317536497.

It is an arithmetic number, because the mean of its divisors is an integer number (50534661794472).

Almost surely, 2^{202100012110123} is an apocalyptic number.

202100012110123 is a deficient number, since it is larger than the sum of its proper divisors (38635067765).

202100012110123 is an equidigital number, since it uses as much as digits as its factorization.

202100012110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38635067764.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 202100012110123 its reverse (321011210001202), we get a palindrome (523111222111325).

The spelling of 202100012110123 in words is "two hundred two trillion, one hundred billion, twelve million, one hundred ten thousand, one hundred twenty-three".