2221211223122 has 4 divisors (see below), whose sum is σ = 3331816834686. Its totient is φ = 1110605611560.

The previous prime is 2221211223089. The next prime is 2221211223149. The reversal of 2221211223122 is 2213221121222.

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., 2086317359281 + 134893863841 = 1444409^2 + 367279^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555302805779 + ... + 555302805782.

Almost surely, 2^{2221211223122} is an apocalyptic number.

2221211223122 is a deficient number, since it is larger than the sum of its proper divisors (1110605611564).

2221211223122 is a wasteful number, since it uses less digits than its factorization.

2221211223122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110605611563.

The product of its digits is 768, while the sum is 23.

Adding to 2221211223122 its reverse (2213221121222), we get a palindrome (4434432344344).

The spelling of 2221211223122 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twenty-three thousand, one hundred twenty-two".