12221222220202 has 8 divisors (see below), whose sum is σ = 18341416103076. Its totient is φ = 6107416852512.

The previous prime is 12221222220197. The next prime is 12221222220203. The reversal of 12221222220202 is 20202222212221.

It can be written as a sum of positive squares in 2 ways, for example, as 12220121241441 + 1100978761 = 3495729^2 + 33181^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12221222220203) 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, 1597124013 + ... + 1597131664.

Almost surely, 2^{12221222220202} is an apocalyptic number.

12221222220202 is a deficient number, since it is larger than the sum of its proper divisors (6120193882874).

12221222220202 is a wasteful number, since it uses less digits than its factorization.

12221222220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3194257592.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 12221222220202 its reverse (20202222212221), we get a palindrome (32423444432423).

The spelling of 12221222220202 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred two".