11821095 has 72 divisors (see below), whose sum is σ = 24399648. Its totient is φ = 5258880.

The previous prime is 11821081. The next prime is 11821123. The reversal of 11821095 is 59012811.

It is not a de Polignac number, because 11821095 - 2⁶ = 11821031 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 70702 + ... + 70868.

It is an arithmetic number, because the mean of its divisors is an integer number (338884).

Almost surely, 2^11821095 is an apocalyptic number.

11821095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11821095 is an abundant number, since it is smaller than the sum of its proper divisors (12578553).

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

11821095 is a wasteful number, since it uses less digits than its factorization.

11821095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 11821095 is about 3438.1819323590. The cubic root of 11821095 is about 227.7993964983.

The spelling of 11821095 in words is "eleven million, eight hundred twenty-one thousand, ninety-five".