1222221220210 has 16 divisors (see below), whose sum is σ = 2226504200256. Its totient is φ = 482998265008.

The previous prime is 1222221220151. The next prime is 1222221220271. The reversal of 1222221220210 is 120221222221.

It is a super-2 number, since 2×1222221220210² (a number of 25 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 736277014 + ... + 736278673.

It is an arithmetic number, because the mean of its divisors is an integer number (139156512516).

Almost surely, 2^{1222221220210} is an apocalyptic number.

1222221220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222221220210 is a deficient number, since it is larger than the sum of its proper divisors (1004282980046).

1222221220210 is a wasteful number, since it uses less digits than its factorization.

1222221220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472555777.

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

Adding to 1222221220210 its reverse (120221222221), we get a palindrome (1342442442431).

The spelling of 1222221220210 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ten".