120121123313 has 4 divisors (see below), whose sum is σ = 120124656960. Its totient is φ = 120117589668.

The previous prime is 120121123261. The next prime is 120121123333. The reversal of 120121123313 is 313321121021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 313321121021 = 225353 ⋅1390357.

It is a cyclic number.

It is not a de Polignac number, because 120121123313 - 2⁶ = 120121123249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121123333) 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, 1715333 + ... + 1783986.

It is an arithmetic number, because the mean of its divisors is an integer number (30031164240).

Almost surely, 2^120121123313 is an apocalyptic number.

It is an amenable number.

120121123313 is a deficient number, since it is larger than the sum of its proper divisors (3533647).

120121123313 is an equidigital number, since it uses as much as digits as its factorization.

120121123313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533646.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 120121123313 its reverse (313321121021), we get a palindrome (433442244334).

The spelling of 120121123313 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred twenty-three thousand, three hundred thirteen".