2221211221202 has 4 divisors (see below), whose sum is σ = 3331816831806. Its totient is φ = 1110605610600.

The previous prime is 2221211221169. The next prime is 2221211221247. The reversal of 2221211221202 is 2021221121222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2028656127481 + 192555093721 = 1424309^2 + 438811^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555302805299 + ... + 555302805302.

Almost surely, 2^{2221211221202} is an apocalyptic number.

2221211221202 is a deficient number, since it is larger than the sum of its proper divisors (1110605610604).

2221211221202 is a wasteful number, since it uses less digits than its factorization.

2221211221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110605610603.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2221211221202 its reverse (2021221121222), we get a palindrome (4242432342424).

The spelling of 2221211221202 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twenty-one thousand, two hundred two".