1220222121112 has 16 divisors (see below), whose sum is σ = 2311503246360. Its totient is φ = 603821255424.

The previous prime is 1220222121091. The next prime is 1220222121149. The reversal of 1220222121112 is 2111212220221.

It is a super-2 number, since 2×1220222121112² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220222121112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786224818 + ... + 786226369.

Almost surely, 2^{1220222121112} is an apocalyptic number.

It is an amenable number.

1220222121112 is a deficient number, since it is larger than the sum of its proper divisors (1091281125248).

1220222121112 is a wasteful number, since it uses less digits than its factorization.

1220222121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572451290 (or 1572451286 counting only the distinct ones).

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

Adding to 1220222121112 its reverse (2111212220221), we get a palindrome (3331434341333).

The spelling of 1220222121112 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".