121201012013 has 4 divisors (see below), whose sum is σ = 121398730428. Its totient is φ = 121003293600.

The previous prime is 121201012003. The next prime is 121201012063. The reversal of 121201012013 is 310210102121.

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 19106703529 + 102094308484 = 138227^2 + 319522^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201012013 - 2⁶ = 121201011949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201012003) 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, 98858288 + ... + 98859513.

It is an arithmetic number, because the mean of its divisors is an integer number (30349682607).

Almost surely, 2^121201012013 is an apocalyptic number.

It is an amenable number.

121201012013 is a deficient number, since it is larger than the sum of its proper divisors (197718415).

121201012013 is an equidigital number, since it uses as much as digits as its factorization.

121201012013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197718414.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121201012013 its reverse (310210102121), we get a palindrome (431411114134).

The spelling of 121201012013 in words is "one hundred twenty-one billion, two hundred one million, twelve thousand, thirteen".