121101001013 has 4 divisors (see below), whose sum is σ = 121101734028. Its totient is φ = 121100268000.

The previous prime is 121101000983. The next prime is 121101001031. The reversal of 121101001013 is 310100101121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 310100101121 = 13163 ⋅23558467.

It can be written as a sum of positive squares in 2 ways, for example, as 106718515684 + 14382485329 = 326678^2 + 119927^2 .

It is a cyclic number.

It is not a de Polignac number, because 121101001013 - 2¹⁶ = 121100935477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121101000985 and 121101001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101001913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10745 + ... + 492257.

It is an arithmetic number, because the mean of its divisors is an integer number (30275433507).

Almost surely, 2^121101001013 is an apocalyptic number.

It is an amenable number.

121101001013 is a deficient number, since it is larger than the sum of its proper divisors (733015).

121101001013 is an equidigital number, since it uses as much as digits as its factorization.

121101001013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733014.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 121101001013 its reverse (310100101121), we get a palindrome (431201102134).

The spelling of 121101001013 in words is "one hundred twenty-one billion, one hundred one million, one thousand, thirteen".