1220240322 has 32 divisors (see below), whose sum is σ = 3099024000. Its totient is φ = 348639984.

The previous prime is 1220240303. The next prime is 1220240327. The reversal of 1220240322 is 2230420221.

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 = 1220240295 and 1220240304.

It is not an unprimeable number, because it can be changed into a prime (1220240327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1613697 + ... + 1614452.

It is an arithmetic number, because the mean of its divisors is an integer number (96844500).

Almost surely, 2^1220240322 is an apocalyptic number.

1220240322 is an abundant number, since it is smaller than the sum of its proper divisors (1878783678).

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

1220240322 is a wasteful number, since it uses less digits than its factorization.

1220240322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228167 (or 3228161 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1220240322 is about 34931.9384231680. The cubic root of 1220240322 is about 1068.5998870730.

Adding to 1220240322 its reverse (2230420221), we get a palindrome (3450660543).

The spelling of 1220240322 in words is "one billion, two hundred twenty million, two hundred forty thousand, three hundred twenty-two".