1220002222212 has 36 divisors (see below), whose sum is σ = 3083929816240. Its totient is φ = 406662751152.

The previous prime is 1220002222199. The next prime is 1220002222213. The reversal of 1220002222212 is 2122222000221.

1220002222212 is a `hidden beast` number, since 1 + 220 + 0 + 0 + 222 + 221 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (1220002222213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4651839 + ... + 4907097.

Almost surely, 2^{1220002222212} is an apocalyptic number.

1220002222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220002222212 is an abundant number, since it is smaller than the sum of its proper divisors (1863927594028).

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

1220002222212 is a wasteful number, since it uses less digits than its factorization.

1220002222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388032 (or 388027 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1220002222212 its reverse (2122222000221), we get a palindrome (3342224222433).

The spelling of 1220002222212 in words is "one trillion, two hundred twenty billion, two million, two hundred twenty-two thousand, two hundred twelve".