101200123 has 4 divisors (see below), whose sum is σ = 101253240. Its totient is φ = 101147008.

The previous prime is 101200117. The next prime is 101200139. The reversal of 101200123 is 321002101.

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 101200123 - 2⁵ = 101200091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101200193) 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, 23590 + ... + 27547.

It is an arithmetic number, because the mean of its divisors is an integer number (25313310).

Almost surely, 2^101200123 is an apocalyptic number.

101200123 is a deficient number, since it is larger than the sum of its proper divisors (53117).

101200123 is an equidigital number, since it uses as much as digits as its factorization.

101200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53116.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 101200123 is about 10059.8271853944. The cubic root of 101200123 is about 466.0083302679.

Adding to 101200123 its reverse (321002101), we get a palindrome (422202224).

The spelling of 101200123 in words is "one hundred one million, two hundred thousand, one hundred twenty-three".