101003123121 has 4 divisors (see below), whose sum is σ = 134670830832. Its totient is φ = 67335415412.

The previous prime is 101003123071. The next prime is 101003123141. The reversal of 101003123121 is 121321300101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101003123121 - 2⁹ = 101003122609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101003123121.

It is not an unprimeable number, because it can be changed into a prime (101003123141) 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, 16833853851 + ... + 16833853856.

It is an arithmetic number, because the mean of its divisors is an integer number (33667707708).

Almost surely, 2^101003123121 is an apocalyptic number.

It is an amenable number.

101003123121 is a deficient number, since it is larger than the sum of its proper divisors (33667707711).

101003123121 is an equidigital number, since it uses as much as digits as its factorization.

101003123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33667707710.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 101003123121 its reverse (121321300101), we get a palindrome (222324423222).

The spelling of 101003123121 in words is "one hundred one billion, three million, one hundred twenty-three thousand, one hundred twenty-one".