121212310013 has 8 divisors (see below), whose sum is σ = 121425937248. Its totient is φ = 120998762064.

The previous prime is 121212309961. The next prime is 121212310049. The reversal of 121212310013 is 310013212121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121212310013 - 2¹⁰ = 121212308989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121212309973 and 121212310000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212316013) 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 7 ways as a sum of consecutive naturals, for example, 3618206 + ... + 3651552.

It is an arithmetic number, because the mean of its divisors is an integer number (15178242156).

Almost surely, 2^121212310013 is an apocalyptic number.

It is an amenable number.

121212310013 is a deficient number, since it is larger than the sum of its proper divisors (213627235).

121212310013 is an equidigital number, since it uses as much as digits as its factorization.

121212310013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39643.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121212310013 its reverse (310013212121), we get a palindrome (431225522134).

The spelling of 121212310013 in words is "one hundred twenty-one billion, two hundred twelve million, three hundred ten thousand, thirteen".