1101220320 has 48 divisors (see below), whose sum is σ = 3468845520. Its totient is φ = 293658624.

The previous prime is 1101220319. The next prime is 1101220333. The reversal of 1101220320 is 230221011.

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 (12).

It is a junction number, because it is equal to n+sod(n) for n = 1101220296 and 1101220305.

It is a congruent number.

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, 1146625 + ... + 1147584.

It is an arithmetic number, because the mean of its divisors is an integer number (72267615).

Almost surely, 2^1101220320 is an apocalyptic number.

1101220320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101220320 is an abundant number, since it is smaller than the sum of its proper divisors (2367625200).

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

1101220320 is a wasteful number, since it uses less digits than its factorization.

1101220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294227 (or 2294219 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1101220320 is about 33184.6398202542. The cubic root of 1101220320 is about 1032.6617053120.

Adding to 1101220320 its reverse (230221011), we get a palindrome (1331441331).

The spelling of 1101220320 in words is "one billion, one hundred one million, two hundred twenty thousand, three hundred twenty".