121210120120013 has 4 divisors (see below), whose sum is σ = 124028960122848. Its totient is φ = 118391280117180.

The previous prime is 121210120119967. The next prime is 121210120120051. The reversal of 121210120120013 is 310021021012121.

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 121210120120013 - 2¹⁴ = 121210120103629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121210120119973 and 121210120120000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210120320013) 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, 1409420001353 + ... + 1409420001438.

It is an arithmetic number, because the mean of its divisors is an integer number (31007240030712).

Almost surely, 2^{121210120120013} is an apocalyptic number.

It is an amenable number.

121210120120013 is a deficient number, since it is larger than the sum of its proper divisors (2818840002835).

121210120120013 is an equidigital number, since it uses as much as digits as its factorization.

121210120120013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818840002834.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121210120120013 its reverse (310021021012121), we get a palindrome (431231141132134).

The spelling of 121210120120013 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty million, one hundred twenty thousand, thirteen".