100121100003 has 10 divisors (see below), whose sum is σ = 149563618644. Its totient is φ = 66747399948.

The previous prime is 100121099989. The next prime is 100121100011. The reversal of 100121100003 is 300001121001.

It is not a de Polignac number, because 100121100003 - 2²⁶ = 100053991139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100121100073) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 618031401 + ... + 618031562.

Almost surely, 2^100121100003 is an apocalyptic number.

100121100003 is a deficient number, since it is larger than the sum of its proper divisors (49442518641).

100121100003 is an equidigital number, since it uses as much as digits as its factorization.

100121100003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236062975 (or 1236062966 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 100121100003 its reverse (300001121001), we get a palindrome (400122221004).

The spelling of 100121100003 in words is "one hundred billion, one hundred twenty-one million, one hundred thousand, three".