12021012213013 has 4 divisors (see below), whose sum is σ = 12023738688780. Its totient is φ = 12018285737248.

The previous prime is 12021012212981. The next prime is 12021012213103. The reversal of 12021012213013 is 31031221012021.

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 5164538043844 + 6856474169169 = 2272562^2 + 2618487^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021012213013 - 2⁵ = 12021012212981 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 (12021012213113) 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, 1363231270 + ... + 1363240087.

It is an arithmetic number, because the mean of its divisors is an integer number (3005934672195).

Almost surely, 2^{12021012213013} is an apocalyptic number.

It is an amenable number.

12021012213013 is a deficient number, since it is larger than the sum of its proper divisors (2726475767).

12021012213013 is an equidigital number, since it uses as much as digits as its factorization.

12021012213013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726475766.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12021012213013 its reverse (31031221012021), we get a palindrome (43052233225034).

The spelling of 12021012213013 in words is "twelve trillion, twenty-one billion, twelve million, two hundred thirteen thousand, thirteen".