11901821241 has 32 divisors (see below), whose sum is σ = 16691932800. Its totient is φ = 7532743680.

The previous prime is 11901821237. The next prime is 11901821251. The reversal of 11901821241 is 14212810911.

11901821241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11901821241 - 2² = 11901821237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11901821199 and 11901821208.

It is not an unprimeable number, because it can be changed into a prime (11901821251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3851425 + ... + 3854513.

It is an arithmetic number, because the mean of its divisors is an integer number (521622900).

Almost surely, 2^11901821241 is an apocalyptic number.

It is an amenable number.

11901821241 is a deficient number, since it is larger than the sum of its proper divisors (4790111559).

11901821241 is a wasteful number, since it uses less digits than its factorization.

11901821241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849.

The product of its (nonzero) digits is 1152, while the sum is 30.

The spelling of 11901821241 in words is "eleven billion, nine hundred one million, eight hundred twenty-one thousand, two hundred forty-one".