39220121232013 has 4 divisors (see below), whose sum is σ = 39234577600828. Its totient is φ = 39205664863200.

The previous prime is 39220121232011. The next prime is 39220121232037. The reversal of 39220121232013 is 31023212102293.

39220121232013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 26064680308164 + 13155440923849 = 5105358^2 + 3627043^2 .

It is a cyclic number.

It is not a de Polignac number, because 39220121232013 - 2¹ = 39220121232011 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 (39220121232011) 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 3 ways as a sum of consecutive naturals, for example, 7228180338 + ... + 7228185763.

It is an arithmetic number, because the mean of its divisors is an integer number (9808644400207).

Almost surely, 2^{39220121232013} is an apocalyptic number.

It is an amenable number.

39220121232013 is a deficient number, since it is larger than the sum of its proper divisors (14456368815).

39220121232013 is a wasteful number, since it uses less digits than its factorization.

39220121232013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14456368814.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 39220121232013 in words is "thirty-nine trillion, two hundred twenty billion, one hundred twenty-one million, two hundred thirty-two thousand, thirteen".