11211601 has 8 divisors (see below), whose sum is σ = 11446400. Its totient is φ = 10979280.

The previous prime is 11211589. The next prime is 11211623. The reversal of 11211601 is 10611211.

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 11211601 - 2⁵ = 11211569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10471 + ... + 11491.

It is an arithmetic number, because the mean of its divisors is an integer number (1430800).

Almost surely, 2^11211601 is an apocalyptic number.

It is an amenable number.

11211601 is a deficient number, since it is larger than the sum of its proper divisors (234799).

11211601 is a wasteful number, since it uses less digits than its factorization.

11211601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 11211601 is about 3348.3728884340. The cubic root of 11211601 is about 223.8150112266.

Adding to 11211601 its reverse (10611211), we get a palindrome (21822812).

The spelling of 11211601 in words is "eleven million, two hundred eleven thousand, six hundred one".