121301023013 has 4 divisors (see below), whose sum is σ = 125483816940. Its totient is φ = 117118229088.

The previous prime is 121301022971. The next prime is 121301023031. The reversal of 121301023013 is 310320103121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30941865409 + 90359157604 = 175903^2 + 300598^2 .

It is a cyclic number.

It is not a de Polignac number, because 121301023013 - 2¹⁸ = 121300760869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121301022982 and 121301023000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121301023033) 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, 2091396920 + ... + 2091396977.

It is an arithmetic number, because the mean of its divisors is an integer number (31370954235).

Almost surely, 2^121301023013 is an apocalyptic number.

It is an amenable number.

121301023013 is a deficient number, since it is larger than the sum of its proper divisors (4182793927).

121301023013 is an equidigital number, since it uses as much as digits as its factorization.

121301023013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182793926.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 121301023013 its reverse (310320103121), we get a palindrome (431621126134).

The spelling of 121301023013 in words is "one hundred twenty-one billion, three hundred one million, twenty-three thousand, thirteen".