20202010123 has 4 divisors (see below), whose sum is σ = 20204427240. Its totient is φ = 20199593008.

The previous prime is 20202010111. The next prime is 20202010151. The reversal of 20202010123 is 32101020202.

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 20202010123 - 2²⁹ = 19665139211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202010183) 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, 1195978 + ... + 1212751.

It is an arithmetic number, because the mean of its divisors is an integer number (5051106810).

Almost surely, 2^20202010123 is an apocalyptic number.

20202010123 is a deficient number, since it is larger than the sum of its proper divisors (2417117).

20202010123 is an equidigital number, since it uses as much as digits as its factorization.

20202010123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417116.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20202010123 its reverse (32101020202), we get a palindrome (52303030325).

The spelling of 20202010123 in words is "twenty billion, two hundred two million, ten thousand, one hundred twenty-three".