12221140202 has 4 divisors (see below), whose sum is σ = 18331710306. Its totient is φ = 6110570100.

The previous prime is 12221140201. The next prime is 12221140273. The reversal of 12221140202 is 20204112221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20204112221 = 251 ⋅80494471.

It can be written as a sum of positive squares in only one way, i.e., 6890826121 + 5330314081 = 83011^2 + 73009^2 .

It is not an unprimeable number, because it can be changed into a prime (12221140201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055285049 + ... + 3055285052.

Almost surely, 2^12221140202 is an apocalyptic number.

12221140202 is a deficient number, since it is larger than the sum of its proper divisors (6110570104).

12221140202 is an equidigital number, since it uses as much as digits as its factorization.

12221140202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110570103.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12221140202 its reverse (20204112221), we get a palindrome (32425252423).

The spelling of 12221140202 in words is "twelve billion, two hundred twenty-one million, one hundred forty thousand, two hundred two".