1220233056 has 48 divisors (see below), whose sum is σ = 3660701184. Its totient is φ = 348637824.

The previous prime is 1220233037. The next prime is 1220233057. The reversal of 1220233056 is 6503320221.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220233057) 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, 907240 + ... + 908583.

It is an arithmetic number, because the mean of its divisors is an integer number (76264608).

Almost surely, 2^1220233056 is an apocalyptic number.

1220233056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1220233056 is an abundant number, since it is smaller than the sum of its proper divisors (2440468128).

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

1220233056 is a wasteful number, since it uses less digits than its factorization.

1220233056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815843 (or 1815835 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1220233056 is about 34931.8344207687. The cubic root of 1220233056 is about 1068.5977660531.

Adding to 1220233056 its reverse (6503320221), we get a palindrome (7723553277).

The spelling of 1220233056 in words is "one billion, two hundred twenty million, two hundred thirty-three thousand, fifty-six".