210211221201210 has 64 divisors (see below), whose sum is σ = 560831598518400. Its totient is φ = 56029491455616.

The previous prime is 210211221201203. The next prime is 210211221201211. The reversal of 210211221201210 is 12102122112012.

210211221201210 is a `hidden beast` number, since 2 + 1 + 0 + 211 + 221 + 20 + 1 + 210 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (210211221201211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185783524 + ... + 186911583.

It is an arithmetic number, because the mean of its divisors is an integer number (8762993726850).

Almost surely, 2^{210211221201210} is an apocalyptic number.

210211221201210 is an abundant number, since it is smaller than the sum of its proper divisors (350620377317190).

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

210211221201210 is a wasteful number, since it uses less digits than its factorization.

210211221201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372697212 (or 372697206 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210211221201210 its reverse (12102122112012), we get a palindrome (222313343313222).

The spelling of 210211221201210 in words is "two hundred ten trillion, two hundred eleven billion, two hundred twenty-one million, two hundred one thousand, two hundred ten".