100320121003 has 4 divisors (see below), whose sum is σ = 100617807160. Its totient is φ = 100022434848.

The previous prime is 100320120991. The next prime is 100320121037. The reversal of 100320121003 is 300121023001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300121023001 = 267671 ⋅1121231.

It is a cyclic number.

It is not a de Polignac number, because 100320121003 - 2⁹ = 100320120491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100320121063) 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, 148842573 + ... + 148843246.

It is an arithmetic number, because the mean of its divisors is an integer number (25154451790).

Almost surely, 2^100320121003 is an apocalyptic number.

100320121003 is a deficient number, since it is larger than the sum of its proper divisors (297686157).

100320121003 is an equidigital number, since it uses as much as digits as its factorization.

100320121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297686156.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 100320121003 its reverse (300121023001), we get a palindrome (400441144004).

The spelling of 100320121003 in words is "one hundred billion, three hundred twenty million, one hundred twenty-one thousand, three".