211204023210 has 128 divisors (see below), whose sum is σ = 587184111360. Its totient is φ = 53973174528.

The previous prime is 211204023209. The next prime is 211204023259. The reversal of 211204023210 is 12320402112.

It is a happy number.

211204023210 is a `hidden beast` number, since 211 + 20 + 402 + 32 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 443712 + ... + 786948.

It is an arithmetic number, because the mean of its divisors is an integer number (4587375870).

Almost surely, 2^211204023210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211204023210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293592055680).

211204023210 is an abundant number, since it is smaller than the sum of its proper divisors (375980088150).

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

211204023210 is a wasteful number, since it uses less digits than its factorization.

211204023210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343349 (or 343343 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 211204023210 its reverse (12320402112), we get a palindrome (223524425322).

The spelling of 211204023210 in words is "two hundred eleven billion, two hundred four million, twenty-three thousand, two hundred ten".