11211901 has 8 divisors (see below), whose sum is σ = 11567808. Its totient is φ = 10860000.

The previous prime is 11211899. The next prime is 11211913. The reversal of 11211901 is 10911211.

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

It is a cyclic number.

It is not a de Polignac number, because 11211901 - 2¹ = 11211899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5286 + ... + 7096.

It is an arithmetic number, because the mean of its divisors is an integer number (1445976).

Almost surely, 2^11211901 is an apocalyptic number.

It is an amenable number.

11211901 is a deficient number, since it is larger than the sum of its proper divisors (355907).

11211901 is a wasteful number, since it uses less digits than its factorization.

11211901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 11211901 is about 3348.4176860123. The cubic root of 11211901 is about 223.8170074894.

The spelling of 11211901 in words is "eleven million, two hundred eleven thousand, nine hundred one".