1111212320 has 24 divisors (see below), whose sum is σ = 2625239484. Its totient is φ = 444484864.

The previous prime is 1111212203. The next prime is 1111212331. The reversal of 1111212320 is 232121111.

It can be written as a sum of positive squares in 2 ways, for example, as 1111022224 + 190096 = 33332^2 + 436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1111212295 and 1111212304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3472379 + ... + 3472698.

Almost surely, 2^1111212320 is an apocalyptic number.

1111212320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111212320 is an abundant number, since it is smaller than the sum of its proper divisors (1514027164).

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

1111212320 is an equidigital number, since it uses as much as digits as its factorization.

1111212320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945092 (or 6945084 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1111212320 is about 33334.8514320973. The cubic root of 1111212320 is about 1035.7756156514.

Adding to 1111212320 its reverse (232121111), we get a palindrome (1343333431).

It can be divided in two parts, 11112 and 12320, that added together give a palindrome (23432).

The spelling of 1111212320 in words is "one billion, one hundred eleven million, two hundred twelve thousand, three hundred twenty".