11821001910 has 16 divisors (see below), whose sum is σ = 28370404656. Its totient is φ = 3152267168.

The previous prime is 11821001893. The next prime is 11821001921. The reversal of 11821001910 is 1910012811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197016669 + ... + 197016728.

It is an arithmetic number, because the mean of its divisors is an integer number (1773150291).

Almost surely, 2^11821001910 is an apocalyptic number.

11821001910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11821001910 is an abundant number, since it is smaller than the sum of its proper divisors (16549402746).

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

11821001910 is a wasteful number, since it uses less digits than its factorization.

11821001910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394033407.

The product of its (nonzero) digits is 144, while the sum is 24.

The spelling of 11821001910 in words is "eleven billion, eight hundred twenty-one million, one thousand, nine hundred ten".