1220333323122 has 128 divisors (see below), whose sum is σ = 3032828640000. Its totient is φ = 362023312896.

The previous prime is 1220333323063. The next prime is 1220333323163. The reversal of 1220333323122 is 2213233330221.

1220333323122 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 333 + 323 + 1 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 546654 + ... + 1655142.

It is an arithmetic number, because the mean of its divisors is an integer number (23693973750).

Almost surely, 2^{1220333323122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220333323122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516414320000).

1220333323122 is an abundant number, since it is smaller than the sum of its proper divisors (1812495316878).

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

1220333323122 is a wasteful number, since it uses less digits than its factorization.

1220333323122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108585 (or 1108579 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 1220333323122 its reverse (2213233330221), we get a palindrome (3433566653343).

The spelling of 1220333323122 in words is "one trillion, two hundred twenty billion, three hundred thirty-three million, three hundred twenty-three thousand, one hundred twenty-two".