2421221013013 has 4 divisors (see below), whose sum is σ = 2641332014208. Its totient is φ = 2201110011820.

The previous prime is 2421221012999. The next prime is 2421221013023. The reversal of 2421221013013 is 3103101221242.

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.

It is a cyclic number.

It is not a de Polignac number, because 2421221013013 - 2¹³ = 2421221004821 is a prime.

It is a super-2 number, since 2×2421221013013² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421221013023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110055500581 + ... + 110055500602.

It is an arithmetic number, because the mean of its divisors is an integer number (660333003552).

Almost surely, 2^{2421221013013} is an apocalyptic number.

It is an amenable number.

2421221013013 is a deficient number, since it is larger than the sum of its proper divisors (220111001195).

2421221013013 is a wasteful number, since it uses less digits than its factorization.

2421221013013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220111001194.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2421221013013 its reverse (3103101221242), we get a palindrome (5524322234255).

The spelling of 2421221013013 in words is "two trillion, four hundred twenty-one billion, two hundred twenty-one million, thirteen thousand, thirteen".