22221021122210 has 8 divisors (see below), whose sum is σ = 39997838019996. Its totient is φ = 8888408448880.

The previous prime is 22221021122203. The next prime is 22221021122273. The reversal of 22221021122210 is 1222112012222.

It can be written as a sum of positive squares in 2 ways, for example, as 20251773038809 + 1969248083401 = 4500197^2 + 1403299^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111051056101 + ... + 1111051056120.

Almost surely, 2^{22221021122210} is an apocalyptic number.

22221021122210 is a deficient number, since it is larger than the sum of its proper divisors (17776816897786).

22221021122210 is a wasteful number, since it uses less digits than its factorization.

22221021122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222102112228.

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

Adding to 22221021122210 its reverse (1222112012222), we get a palindrome (23443133134432).

The spelling of 22221021122210 in words is "twenty-two trillion, two hundred twenty-one billion, twenty-one million, one hundred twenty-two thousand, two hundred ten".