1220112122228 has 48 divisors (see below), whose sum is σ = 2156344881600. Its totient is φ = 604039645440.

The previous prime is 1220112122227. The next prime is 1220112122237. The reversal of 1220112122228 is 8222212110221.

It is a junction number, because it is equal to n+sod(n) for n = 1220112122197 and 1220112122206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220112122227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572552723 + ... + 572554853.

It is an arithmetic number, because the mean of its divisors is an integer number (44923851700).

Almost surely, 2^{1220112122228} is an apocalyptic number.

It is an amenable number.

1220112122228 is a deficient number, since it is larger than the sum of its proper divisors (936232759372).

1220112122228 is a wasteful number, since it uses less digits than its factorization.

1220112122228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4560 (or 4558 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

Adding to 1220112122228 its reverse (8222212110221), we get a palindrome (9442324232449).

The spelling of 1220112122228 in words is "one trillion, two hundred twenty billion, one hundred twelve million, one hundred twenty-two thousand, two hundred twenty-eight".