10020200123 has 4 divisors (see below), whose sum is σ = 10052419728. Its totient is φ = 9987980520.

The previous prime is 10020200119. The next prime is 10020200161. The reversal of 10020200123 is 32100202001.

It is a happy number.

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 10020200123 - 2² = 10020200119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020230123) 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, 16109336 + ... + 16109957.

It is an arithmetic number, because the mean of its divisors is an integer number (2513104932).

Almost surely, 2^10020200123 is an apocalyptic number.

10020200123 is a deficient number, since it is larger than the sum of its proper divisors (32219605).

10020200123 is an equidigital number, since it uses as much as digits as its factorization.

10020200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32219604.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 10020200123 its reverse (32100202001), we get a palindrome (42120402124).

The spelling of 10020200123 in words is "ten billion, twenty million, two hundred thousand, one hundred twenty-three".