2101003010123 has 4 divisors (see below), whose sum is σ = 2101068939288. Its totient is φ = 2100937080960.

The previous prime is 2101003010059. The next prime is 2101003010167. The reversal of 2101003010123 is 3210103001012.

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 2101003010123 - 2⁶ = 2101003010059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101003010098 and 2101003010107.

It is not an unprimeable number, because it can be changed into a prime (2101003010723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32916758 + ... + 32980523.

It is an arithmetic number, because the mean of its divisors is an integer number (525267234822).

Almost surely, 2^{2101003010123} is an apocalyptic number.

2101003010123 is a deficient number, since it is larger than the sum of its proper divisors (65929165).

2101003010123 is an equidigital number, since it uses as much as digits as its factorization.

2101003010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65929164.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 2101003010123 its reverse (3210103001012), we get a palindrome (5311106011135).

It can be divided in two parts, 210100 and 3010123, that added together give a palindrome (3220223).

The spelling of 2101003010123 in words is "two trillion, one hundred one billion, three million, ten thousand, one hundred twenty-three".