11821377 has 8 divisors (see below), whose sum is σ = 15906880. Its totient is φ = 7808400.

The previous prime is 11821367. The next prime is 11821387. The reversal of 11821377 is 77312811.

It is an interprime number because it is at equal distance from previous prime (11821367) and next prime (11821387).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11821377 - 2⁴ = 11821361 is a prime.

It is a super-3 number, since 3×11821377³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11821367) 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, 17749 + ... + 18402.

It is an arithmetic number, because the mean of its divisors is an integer number (1988360).

Almost surely, 2^11821377 is an apocalyptic number.

It is an amenable number.

11821377 is a deficient number, since it is larger than the sum of its proper divisors (4085503).

11821377 is a wasteful number, since it uses less digits than its factorization.

11821377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36263.

The product of its digits is 2352, while the sum is 30.

The square root of 11821377 is about 3438.2229421607. Note that the first 3 decimals coincide. The cubic root of 11821377 is about 227.8012079187.

The spelling of 11821377 in words is "eleven million, eight hundred twenty-one thousand, three hundred seventy-seven".