1121222100228 has 96 divisors (see below), whose sum is σ = 2653772889600. Its totient is φ = 368405176320.

The previous prime is 1121222100221. The next prime is 1121222100233. The reversal of 1121222100228 is 8220012221211.

It is a junction number, because it is equal to n+sod(n) for n = 1121222100198 and 1121222100207.

It is not an unprimeable number, because it can be changed into a prime (1121222100221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367732848 + ... + 367735896.

It is an arithmetic number, because the mean of its divisors is an integer number (27643467600).

Almost surely, 2^{1121222100228} is an apocalyptic number.

It is an amenable number.

1121222100228 is an abundant number, since it is smaller than the sum of its proper divisors (1532550789372).

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

1121222100228 is a wasteful number, since it uses less digits than its factorization.

1121222100228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4317 (or 4315 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 1121222100228 its reverse (8220012221211), we get a palindrome (9341234321439).

The spelling of 1121222100228 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred thousand, two hundred twenty-eight".