12021145677613 has 4 divisors (see below), whose sum is σ = 12021236615808. Its totient is φ = 12021054739420.

The previous prime is 12021145677587. The next prime is 12021145677643. The reversal of 12021145677613 is 31677654112021.

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 12021145677613 - 2⁴¹ = 9822122422061 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 (12021145677643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45270523 + ... + 45535288.

It is an arithmetic number, because the mean of its divisors is an integer number (3005309153952).

Almost surely, 2^{12021145677613} is an apocalyptic number.

It is an amenable number.

12021145677613 is a deficient number, since it is larger than the sum of its proper divisors (90938195).

12021145677613 is an equidigital number, since it uses as much as digits as its factorization.

12021145677613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90938194.

The product of its (nonzero) digits is 423360, while the sum is 46.

Adding to 12021145677613 its reverse (31677654112021), we get a palindrome (43698799789634).

The spelling of 12021145677613 in words is "twelve trillion, twenty-one billion, one hundred forty-five million, six hundred seventy-seven thousand, six hundred thirteen".