210201221220210 has 96 divisors (see below), whose sum is σ = 596286732263040. Its totient is φ = 50951065651200.

The previous prime is 210201221220203. The next prime is 210201221220239. The reversal of 210201221220210 is 12022122102012.

It is a happy number.

210201221220210 is a `hidden beast` number, since 2 + 1 + 0 + 201 + 221 + 220 + 21 + 0 = 666.

It is a super-3 number, since 3×210201221220210³ (a number of 44 digits) contains 333 as substring.

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 47 ways as a sum of consecutive naturals, for example, 6761646 + ... + 21589865.

It is an arithmetic number, because the mean of its divisors is an integer number (6211320127740).

Almost surely, 2^{210201221220210} is an apocalyptic number.

210201221220210 is an abundant number, since it is smaller than the sum of its proper divisors (386085511042830).

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

210201221220210 is a wasteful number, since it uses less digits than its factorization.

210201221220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28359024 (or 28359021 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210201221220210 its reverse (12022122102012), we get a palindrome (222223343322222).

The spelling of 210201221220210 in words is "two hundred ten trillion, two hundred one billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ten".