12202001121221 has 8 divisors (see below), whose sum is σ = 12239926116600. Its totient is φ = 12164093053632.

The previous prime is 12202001121199. The next prime is 12202001121257. The reversal of 12202001121221 is 12212110020221.

It can be written as a sum of positive squares in 4 ways, for example, as 8041115090596 + 4160886030625 = 2835686^2 + 2039825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12202001121221 - 2¹⁴ = 12202001104837 is a prime.

It is a super-2 number, since 2×12202001121221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12202001121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202001111221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2787290 + ... + 5672123.

It is an arithmetic number, because the mean of its divisors is an integer number (1529990764575).

Almost surely, 2^{12202001121221} is an apocalyptic number.

It is an amenable number.

12202001121221 is a deficient number, since it is larger than the sum of its proper divisors (37924995379).

12202001121221 is an equidigital number, since it uses as much as digits as its factorization.

12202001121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8463895.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12202001121221 its reverse (12212110020221), we get a palindrome (24414111141442).

The spelling of 12202001121221 in words is "twelve trillion, two hundred two billion, one million, one hundred twenty-one thousand, two hundred twenty-one".