1220120212228 has 12 divisors (see below), whose sum is σ = 2139292995280. Its totient is φ = 608893642152.

The previous prime is 1220120212211. The next prime is 1220120212229. The reversal of 1220120212228 is 8222120210221.

It is not an unprimeable number, because it can be changed into a prime (1220120212229) by changing a digit.

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, 291613638 + ... + 291617821.

Almost surely, 2^{1220120212228} is an apocalyptic number.

It is an amenable number.

1220120212228 is a deficient number, since it is larger than the sum of its proper divisors (919172783052).

1220120212228 is a wasteful number, since it uses less digits than its factorization.

1220120212228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583231986 (or 583231984 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 1220120212228 its reverse (8222120210221), we get a palindrome (9442240422449).

The spelling of 1220120212228 in words is "one trillion, two hundred twenty billion, one hundred twenty million, two hundred twelve thousand, two hundred twenty-eight".