12202212121013 has 4 divisors (see below), whose sum is σ = 12919989304620. Its totient is φ = 11484434937408.

The previous prime is 12202212121007. The next prime is 12202212121079. The reversal of 12202212121013 is 31012121220221.

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 3961282148209 + 8240929972804 = 1990297^2 + 2870702^2 .

It is a cyclic number.

It is not a de Polignac number, because 12202212121013 - 2⁴ = 12202212120997 is a prime.

It is a super-2 number, since 2×12202212121013² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202212121213) 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, 358888591778 + ... + 358888591811.

It is an arithmetic number, because the mean of its divisors is an integer number (3229997326155).

Almost surely, 2^{12202212121013} is an apocalyptic number.

It is an amenable number.

12202212121013 is a deficient number, since it is larger than the sum of its proper divisors (717777183607).

12202212121013 is an equidigital number, since it uses as much as digits as its factorization.

12202212121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717777183606.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12202212121013 its reverse (31012121220221), we get a palindrome (43214333341234).

The spelling of 12202212121013 in words is "twelve trillion, two hundred two billion, two hundred twelve million, one hundred twenty-one thousand, thirteen".