1221242034013 has 8 divisors (see below), whose sum is σ = 1326986251520. Its totient is φ = 1119644648640.

The previous prime is 1221242034011. The next prime is 1221242034049. The reversal of 1221242034013 is 3104302421221.

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 1221242034013 - 2¹ = 1221242034011 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 (1221242034011) 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, 1036707420 + ... + 1036708597.

It is an arithmetic number, because the mean of its divisors is an integer number (165873281440).

Almost surely, 2^{1221242034013} is an apocalyptic number.

It is an amenable number.

1221242034013 is a deficient number, since it is larger than the sum of its proper divisors (105744217507).

1221242034013 is a wasteful number, since it uses less digits than its factorization.

1221242034013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073416067.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1221242034013 its reverse (3104302421221), we get a palindrome (4325544455234).

The spelling of 1221242034013 in words is "one trillion, two hundred twenty-one billion, two hundred forty-two million, thirty-four thousand, thirteen".