121230424043213 has 8 divisors (see below), whose sum is σ = 121858881471096. Its totient is φ = 120601969920000.

The previous prime is 121230424043191. The next prime is 121230424043291. The reversal of 121230424043213 is 312340424032121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6380686104004 + 114849737939209 = 2526002^2 + 10716797^2 .

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 121230424043213 - 2¹² = 121230424039117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121230424043213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121230424046213) 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, 113946713 + ... + 115005713.

It is an arithmetic number, because the mean of its divisors is an integer number (15232360183887).

Almost surely, 2^{121230424043213} is an apocalyptic number.

It is an amenable number.

121230424043213 is a deficient number, since it is larger than the sum of its proper divisors (628457427883).

121230424043213 is a wasteful number, since it uses less digits than its factorization.

121230424043213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652335.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 121230424043213 its reverse (312340424032121), we get a palindrome (433570848075334).

The spelling of 121230424043213 in words is "one hundred twenty-one trillion, two hundred thirty billion, four hundred twenty-four million, forty-three thousand, two hundred thirteen".