211400205 has 16 divisors (see below), whose sum is σ = 339722880. Its totient is φ = 112252608.

The previous prime is 211400183. The next prime is 211400237. The reversal of 211400205 is 502004112.

211400205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211400205 - 2⁵ = 211400173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27337 + ... + 34206.

It is an arithmetic number, because the mean of its divisors is an integer number (21232680).

Almost surely, 2^211400205 is an apocalyptic number.

It is an amenable number.

211400205 is a deficient number, since it is larger than the sum of its proper divisors (128322675).

211400205 is a wasteful number, since it uses less digits than its factorization.

211400205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61780.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 211400205 is about 14539.6081446509. The cubic root of 211400205 is about 595.7103349330.

Adding to 211400205 its reverse (502004112), we get a palindrome (713404317).

The spelling of 211400205 in words is "two hundred eleven million, four hundred thousand, two hundred five".