1113221880 has 192 divisors, whose sum is σ = 3973263840. Its totient is φ = 279355392.

The previous prime is 1113221861. The next prime is 1113221881. The reversal of 1113221880 is 881223111.

It is a super-2 number, since 2×1113221880² = 2478525908221468800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113221881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161872 + ... + 168608.

Almost surely, 2^1113221880 is an apocalyptic number.

1113221880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1113221880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1986631920).

1113221880 is an abundant number, since it is smaller than the sum of its proper divisors (2860041960).

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

1113221880 is a wasteful number, since it uses less digits than its factorization.

1113221880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780 (or 6764 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 1113221880 is about 33364.9798441420. The cubic root of 1113221880 is about 1036.3996187456.

Adding to 1113221880 its reverse (881223111), we get a palindrome (1994444991).

It can be divided in two parts, 111 and 3221880, that added together give a triangular number (3221991 = T₂₅₃₈).

The spelling of 1113221880 in words is "one billion, one hundred thirteen million, two hundred twenty-one thousand, eight hundred eighty".