1222011122212 has 12 divisors (see below), whose sum is σ = 2141397691776. Its totient is φ = 610183210280.

The previous prime is 1222011122209. The next prime is 1222011122261. The reversal of 1222011122212 is 2122211102221.

It is a super-2 number, since 2×1222011122212² (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 1222011122212.

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 3 ways as a sum of consecutive naturals, for example, 205584364 + ... + 205590307.

It is an arithmetic number, because the mean of its divisors is an integer number (178449807648).

Almost surely, 2^{1222011122212} is an apocalyptic number.

It is an amenable number.

1222011122212 is a deficient number, since it is larger than the sum of its proper divisors (919386569564).

1222011122212 is a wasteful number, since it uses less digits than its factorization.

1222011122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411175418 (or 411175416 counting only the distinct ones).

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

Adding to 1222011122212 its reverse (2122211102221), we get a palindrome (3344222224433).

The spelling of 1222011122212 in words is "one trillion, two hundred twenty-two billion, eleven million, one hundred twenty-two thousand, two hundred twelve".