211240401 has 8 divisors (see below), whose sum is σ = 282616320. Its totient is φ = 140345712.

The previous prime is 211240399. The next prime is 211240409. The reversal of 211240401 is 104042112.

211240401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 211240401 - 2¹ = 211240399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211240409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119281 + ... + 121038.

It is an arithmetic number, because the mean of its divisors is an integer number (35327040).

Almost surely, 2^211240401 is an apocalyptic number.

It is an amenable number.

211240401 is a deficient number, since it is larger than the sum of its proper divisors (71375919).

211240401 is a wasteful number, since it uses less digits than its factorization.

211240401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240615.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 211240401 is about 14534.1116343587. Note that the first 3 decimals coincide. The cubic root of 211240401 is about 595.5601917612.

Adding to 211240401 its reverse (104042112), we get a palindrome (315282513).

The spelling of 211240401 in words is "two hundred eleven million, two hundred forty thousand, four hundred one".