1220121101222 has 16 divisors (see below), whose sum is σ = 1850958853632. Its totient is φ = 603157487880.

The previous prime is 1220121101219. The next prime is 1220121101321. The reversal of 1220121101222 is 2221011210221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220121101222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5559854 + ... + 5775137.

It is an arithmetic number, because the mean of its divisors is an integer number (115684928352).

Almost surely, 2^{1220121101222} is an apocalyptic number.

1220121101222 is a deficient number, since it is larger than the sum of its proper divisors (630837752410).

1220121101222 is a wasteful number, since it uses less digits than its factorization.

1220121101222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11335603.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1220121101222 its reverse (2221011210221), we get a palindrome (3441132311443).

The spelling of 1220121101222 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, one hundred one thousand, two hundred twenty-two".