11921330 has 16 divisors (see below), whose sum is σ = 21657240. Its totient is φ = 4724352.

The previous prime is 11921317. The next prime is 11921339. The reversal of 11921330 is 3312911.

It can be written as a sum of positive squares in 4 ways, for example, as 11854249 + 67081 = 3443^2 + 259^2 .

It is not an unprimeable number, because it can be changed into a prime (11921339) 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, 4379 + ... + 6558.

Almost surely, 2^11921330 is an apocalyptic number.

11921330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11921330 is a deficient number, since it is larger than the sum of its proper divisors (9735910).

11921330 is a wasteful number, since it uses less digits than its factorization.

11921330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11053.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 11921330 is about 3452.7279070324. The cubic root of 11921330 is about 228.4414474894.

The spelling of 11921330 in words is "eleven million, nine hundred twenty-one thousand, three hundred thirty".