12221232202 has 4 divisors (see below), whose sum is σ = 18331848306. Its totient is φ = 6110616100.

The previous prime is 12221232197. The next prime is 12221232203. The reversal of 12221232202 is 20223212221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20223212221 = 379 ⋅53359399.

It can be written as a sum of positive squares in only one way, i.e., 9690236721 + 2530995481 = 98439^2 + 50309^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12221232202.

It is not an unprimeable number, because it can be changed into a prime (12221232203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055308049 + ... + 3055308052.

Almost surely, 2^12221232202 is an apocalyptic number.

12221232202 is a deficient number, since it is larger than the sum of its proper divisors (6110616104).

12221232202 is an equidigital number, since it uses as much as digits as its factorization.

12221232202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110616103.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12221232202 its reverse (20223212221), we get a palindrome (32444444423).

The spelling of 12221232202 in words is "twelve billion, two hundred twenty-one million, two hundred thirty-two thousand, two hundred two".