121320012011213 has 8 divisors (see below), whose sum is σ = 121805978338968. Its totient is φ = 120834534832704.

The previous prime is 121320012011203. The next prime is 121320012011227. The reversal of 121320012011213 is 312110210023121.

It can be written as a sum of positive squares in 4 ways, for example, as 23291260514404 + 98028751496809 = 4826102^2 + 9900947^2 .

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 121320012011213 - 2²⁰ = 121320010962637 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 (121320012011203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121790270 + ... + 122782367.

It is an arithmetic number, because the mean of its divisors is an integer number (15225747292371).

Almost surely, 2^{121320012011213} is an apocalyptic number.

It is an amenable number.

121320012011213 is a deficient number, since it is larger than the sum of its proper divisors (485966327755).

121320012011213 is a wasteful number, since it uses less digits than its factorization.

121320012011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244574623.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121320012011213 its reverse (312110210023121), we get a palindrome (433430222034334).

The spelling of 121320012011213 in words is "one hundred twenty-one trillion, three hundred twenty billion, twelve million, eleven thousand, two hundred thirteen".