210200221123209 has 12 divisors (see below), whose sum is σ = 306309466770996. Its totient is φ = 138893361449472.

The previous prime is 210200221123199. The next prime is 210200221123231. The reversal of 210200221123209 is 902321122002012.

210200221123209 is a `hidden beast` number, since 2 + 1 + 0 + 200 + 22 + 112 + 320 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 50861430158400 + 159338790964809 = 7131720^2 + 12622947^2 .

It is a de Polignac number, because none of the positive numbers 2^k-210200221123209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210200221123289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103343273872 + ... + 103343275905.

It is an arithmetic number, because the mean of its divisors is an integer number (25525788897583).

Almost surely, 2^{210200221123209} is an apocalyptic number.

It is an amenable number.

210200221123209 is a deficient number, since it is larger than the sum of its proper divisors (96109245647787).

210200221123209 is a wasteful number, since it uses less digits than its factorization.

210200221123209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206686549896 (or 206686549893 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 210200221123209 in words is "two hundred ten trillion, two hundred billion, two hundred twenty-one million, one hundred twenty-three thousand, two hundred nine".