1121203320 has 64 divisors (see below), whose sum is σ = 3369647520. Its totient is φ = 298450944.

The previous prime is 1121203301. The next prime is 1121203361. The reversal of 1121203320 is 233021211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1121203320.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 61144 + ... + 77336.

Almost surely, 2^1121203320 is an apocalyptic number.

1121203320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121203320 is an abundant number, since it is smaller than the sum of its proper divisors (2248444200).

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

1121203320 is a wasteful number, since it uses less digits than its factorization.

1121203320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16784 (or 16780 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1121203320 is about 33484.3742662156. The cubic root of 1121203320 is about 1038.8706058257.

Adding to 1121203320 its reverse (233021211), we get a palindrome (1354224531).

It can be divided in two parts, 112120 and 3320, that added together give a triangular number (115440 = T₄₈₀).

The spelling of 1121203320 in words is "one billion, one hundred twenty-one million, two hundred three thousand, three hundred twenty".