1220331221092 has 24 divisors (see below), whose sum is σ = 2261281148280. Its totient is φ = 574253406720.

The previous prime is 1220331221009. The next prime is 1220331221233. The reversal of 1220331221092 is 2901221330221.

It can be written as a sum of positive squares in 4 ways, for example, as 205448253696 + 1014882967396 = 453264^2 + 1007414^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1220331221092.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1740042 + ... + 2338462.

It is an arithmetic number, because the mean of its divisors is an integer number (94220047845).

Almost surely, 2^{1220331221092} is an apocalyptic number.

It is an amenable number.

1220331221092 is a deficient number, since it is larger than the sum of its proper divisors (1040949927188).

1220331221092 is a wasteful number, since it uses less digits than its factorization.

1220331221092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628431 (or 628429 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 1220331221092 in words is "one trillion, two hundred twenty billion, three hundred thirty-one million, two hundred twenty-one thousand, ninety-two".