100123220003 has 4 divisors (see below), whose sum is σ = 100252746288. Its totient is φ = 99993693720.

The previous prime is 100123219979. The next prime is 100123220023. The reversal of 100123220003 is 300022321001.

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 100123220003 - 2⁸ = 100123219747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100123220003.

It is not an unprimeable number, because it can be changed into a prime (100123220023) 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, 64761983 + ... + 64763528.

It is an arithmetic number, because the mean of its divisors is an integer number (25063186572).

Almost surely, 2^100123220003 is an apocalyptic number.

100123220003 is a deficient number, since it is larger than the sum of its proper divisors (129526285).

100123220003 is an equidigital number, since it uses as much as digits as its factorization.

100123220003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129526284.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 100123220003 its reverse (300022321001), we get a palindrome (400145541004).

The spelling of 100123220003 in words is "one hundred billion, one hundred twenty-three million, two hundred twenty thousand, three".