210210042102210 has 24 divisors (see below), whose sum is σ = 546546109465980. Its totient is φ = 56056011227232.

The previous prime is 210210042102209. The next prime is 210210042102239. The reversal of 210210042102210 is 12201240012012.

210210042102210 is a `hidden beast` number, since 2 + 1 + 0 + 21 + 0 + 0 + 421 + 0 + 221 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 173570058810801 + 36639983291409 = 13174599^2 + 6053097^2 .

It is a super-2 number, since 2×210210042102210² (a number of 29 digits) contains 22 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 11 ways as a sum of consecutive naturals, for example, 1167833567145 + ... + 1167833567324.

Almost surely, 2^{210210042102210} is an apocalyptic number.

210210042102210 is an abundant number, since it is smaller than the sum of its proper divisors (336336067363770).

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

210210042102210 is a wasteful number, since it uses less digits than its factorization.

210210042102210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335667134482 (or 2335667134479 counting only the distinct ones).

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

Adding to 210210042102210 its reverse (12201240012012), we get a palindrome (222411282114222).

The spelling of 210210042102210 in words is "two hundred ten trillion, two hundred ten billion, forty-two million, one hundred two thousand, two hundred ten".