1222221022210 has 64 divisors (see below), whose sum is σ = 2293299047520. Its totient is φ = 468415682560.

The previous prime is 1222221022193. The next prime is 1222221022241. The reversal of 1222221022210 is 122201222221.

It can be written as a sum of positive squares in 16 ways, for example, as 128563122249 + 1093657899961 = 358557^2 + 1045781^2 .

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 in 31 ways as a sum of consecutive naturals, for example, 213784272 + ... + 213789988.

Almost surely, 2^{1222221022210} is an apocalyptic number.

1222221022210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222221022210 is a deficient number, since it is larger than the sum of its proper divisors (1071078025310).

1222221022210 is a wasteful number, since it uses less digits than its factorization.

1222221022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11271.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1222221022210 its reverse (122201222221), we get a palindrome (1344422244431).

The spelling of 1222221022210 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, twenty-two thousand, two hundred ten".