210212221121210 has 128 divisors (see below), whose sum is σ = 481960826818560. Its totient is φ = 64115333568000.

The previous prime is 210212221121191. The next prime is 210212221121219. The reversal of 210212221121210 is 12121122212012.

It is not an unprimeable number, because it can be changed into a prime (210212221121219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5702195 + ... + 21282374.

It is an arithmetic number, because the mean of its divisors is an integer number (3765318959520).

Almost surely, 2^{210212221121210} is an apocalyptic number.

210212221121210 is an abundant number, since it is smaller than the sum of its proper divisors (271748605697350).

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

210212221121210 is a wasteful number, since it uses less digits than its factorization.

210212221121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26984812.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 210212221121210 its reverse (12121122212012), we get a palindrome (222333343333222).

The spelling of 210212221121210 in words is "two hundred ten trillion, two hundred twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred ten".