121003110121 has 4 divisors (see below), whose sum is σ = 121006808452. Its totient is φ = 120999411792.

The previous prime is 121003110113. The next prime is 121003110143. The reversal of 121003110121 is 121011300121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121011300121 = 367 ⋅329731063.

It can be written as a sum of positive squares in 2 ways, for example, as 27251406400 + 93751703721 = 165080^2 + 306189^2 .

It is a cyclic number.

It is not a de Polignac number, because 121003110121 - 2³ = 121003110113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121003110721) 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, 1799646 + ... + 1865671.

It is an arithmetic number, because the mean of its divisors is an integer number (30251702113).

Almost surely, 2^121003110121 is an apocalyptic number.

It is an amenable number.

121003110121 is a deficient number, since it is larger than the sum of its proper divisors (3698331).

121003110121 is an equidigital number, since it uses as much as digits as its factorization.

121003110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698330.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 121003110121 its reverse (121011300121), we get a palindrome (242014410242).

The spelling of 121003110121 in words is "one hundred twenty-one billion, three million, one hundred ten thousand, one hundred twenty-one".