100020220123 has 4 divisors (see below), whose sum is σ = 100449491688. Its totient is φ = 99590948560.

The previous prime is 100020220093. The next prime is 100020220151. The reversal of 100020220123 is 321022020001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321022020001 = 131 ⋅2450549771.

It is a cyclic number.

It is not a de Polignac number, because 100020220123 - 2¹³ = 100020211931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100020220163) 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, 214635433 + ... + 214635898.

It is an arithmetic number, because the mean of its divisors is an integer number (25112372922).

Almost surely, 2^100020220123 is an apocalyptic number.

100020220123 is a deficient number, since it is larger than the sum of its proper divisors (429271565).

100020220123 is an equidigital number, since it uses as much as digits as its factorization.

100020220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429271564.

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

Adding to 100020220123 its reverse (321022020001), we get a palindrome (421042240124).

The spelling of 100020220123 in words is "one hundred billion, twenty million, two hundred twenty thousand, one hundred twenty-three".