1121222222320 has 40 divisors (see below), whose sum is σ = 2651025435120. Its totient is φ = 440887380480.

The previous prime is 1121222222303. The next prime is 1121222222321. The reversal of 1121222222320 is 232222221211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1121222222291 and 1121222222300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121222222321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118768821 + ... + 118778260.

It is an arithmetic number, because the mean of its divisors is an integer number (66275635878).

Almost surely, 2^{1121222222320} is an apocalyptic number.

1121222222320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121222222320 is an abundant number, since it is smaller than the sum of its proper divisors (1529803212800).

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

1121222222320 is a wasteful number, since it uses less digits than its factorization.

1121222222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237547153 (or 237547147 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 1121222222320 its reverse (232222221211), we get a palindrome (1353444443531).

The spelling of 1121222222320 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-two thousand, three hundred twenty".