211205104 has 40 divisors (see below), whose sum is σ = 457314480. Its totient is φ = 93657600.

The previous prime is 211205089. The next prime is 211205117. The reversal of 211205104 is 401502112.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7419 + ... + 21850.

It is an arithmetic number, because the mean of its divisors is an integer number (11432862).

Almost surely, 2^211205104 is an apocalyptic number.

It is an amenable number.

211205104 is an abundant number, since it is smaller than the sum of its proper divisors (246109376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211205104 is a wasteful number, since it uses less digits than its factorization.

211205104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29329 (or 29323 counting only the distinct ones).

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

The square root of 211205104 is about 14532.8973023276. The cubic root of 211205104 is about 595.5270184052.

Adding to 211205104 its reverse (401502112), we get a palindrome (612707216).

The spelling of 211205104 in words is "two hundred eleven million, two hundred five thousand, one hundred four".