211136401 has 4 divisors (see below), whose sum is σ = 241298752. Its totient is φ = 180974052.

The previous prime is 211136369. The next prime is 211136437. The reversal of 211136401 is 104631112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211136401 - 2⁵ = 211136369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211146401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15081165 + ... + 15081178.

It is an arithmetic number, because the mean of its divisors is an integer number (60324688).

Almost surely, 2^211136401 is an apocalyptic number.

It is an amenable number.

211136401 is a deficient number, since it is larger than the sum of its proper divisors (30162351).

211136401 is an equidigital number, since it uses as much as digits as its factorization.

211136401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30162350.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 211136401 is about 14530.5334038362. The cubic root of 211136401 is about 595.4624383215.

Adding to 211136401 its reverse (104631112), we get a palindrome (315767513).

The spelling of 211136401 in words is "two hundred eleven million, one hundred thirty-six thousand, four hundred one".