1201121221222 has 16 divisors (see below), whose sum is σ = 1987596469152. Its totient is φ = 540842575680.

The previous prime is 1201121221187. The next prime is 1201121221231. The reversal of 1201121221222 is 2221221211021.

It is a self number, because there is not a number n which added to its sum of digits gives 1201121221222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563376618 + ... + 563378749.

It is an arithmetic number, because the mean of its divisors is an integer number (124224779322).

Almost surely, 2^{1201121221222} is an apocalyptic number.

1201121221222 is a deficient number, since it is larger than the sum of its proper divisors (786475247930).

1201121221222 is a wasteful number, since it uses less digits than its factorization.

1201121221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126755423.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1201121221222 its reverse (2221221211021), we get a palindrome (3422342432243).

The spelling of 1201121221222 in words is "one trillion, two hundred one billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".