1210201221222 has 24 divisors (see below), whose sum is σ = 2996688738576. Its totient is φ = 345771777456.

The previous prime is 1210201221217. The next prime is 1210201221247. The reversal of 1210201221222 is 2221221020121.

It is a happy number.

1210201221222 is a `hidden beast` number, since 1 + 21 + 0 + 201 + 221 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1210201221195 and 1210201221204.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 4802385673 + ... + 4802385924.

It is an arithmetic number, because the mean of its divisors is an integer number (124862030774).

Almost surely, 2^{1210201221222} is an apocalyptic number.

1210201221222 is an abundant number, since it is smaller than the sum of its proper divisors (1786487517354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1210201221222 is a wasteful number, since it uses less digits than its factorization.

1210201221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604771612 (or 9604771609 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1210201221222 its reverse (2221221020121), we get a palindrome (3431422241343).

The spelling of 1210201221222 in words is "one trillion, two hundred ten billion, two hundred one million, two hundred twenty-one thousand, two hundred twenty-two".