1220051322 has 80 divisors (see below), whose sum is σ = 3133323072. Its totient is φ = 347587200.

The previous prime is 1220051321. The next prime is 1220051363. The reversal of 1220051322 is 2231500221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1220051295 and 1220051304.

It is not an unprimeable number, because it can be changed into a prime (1220051321) 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 39 ways as a sum of consecutive naturals, for example, 453393 + ... + 456075.

Almost surely, 2^1220051322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220051322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1566661536).

1220051322 is an abundant number, since it is smaller than the sum of its proper divisors (1913271750).

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

1220051322 is a wasteful number, since it uses less digits than its factorization.

1220051322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105 (or 3096 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1220051322 is about 34929.2330577126. The cubic root of 1220051322 is about 1068.5447132947.

Adding to 1220051322 its reverse (2231500221), we get a palindrome (3451551543).

The spelling of 1220051322 in words is "one billion, two hundred twenty million, fifty-one thousand, three hundred twenty-two".