211205401 has 8 divisors (see below), whose sum is σ = 231787584. Its totient is φ = 190853520.

The previous prime is 211205383. The next prime is 211205429. The reversal of 211205401 is 104502112.

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

It is a de Polignac number, because none of the positive numbers 2^k-211205401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211205431) 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, 55650 + ... + 59323.

It is an arithmetic number, because the mean of its divisors is an integer number (28973448).

Almost surely, 2^211205401 is an apocalyptic number.

It is an amenable number.

211205401 is a deficient number, since it is larger than the sum of its proper divisors (20582183).

211205401 is a wasteful number, since it uses less digits than its factorization.

211205401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115151.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 211205401 is about 14532.9075205205. The cubic root of 211205401 is about 595.5272975516.

Adding to 211205401 its reverse (104502112), we get a palindrome (315707513).

The spelling of 211205401 in words is "two hundred eleven million, two hundred five thousand, four hundred one".