210121120210 has 8 divisors (see below), whose sum is σ = 378218016396. Its totient is φ = 84048448080.

The previous prime is 210121120193. The next prime is 210121120219. The reversal of 210121120210 is 12021121012.

210121120210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 196946901369 + 13174218841 = 443787^2 + 114779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (210121120219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10506056001 + ... + 10506056020.

Almost surely, 2^210121120210 is an apocalyptic number.

210121120210 is a deficient number, since it is larger than the sum of its proper divisors (168096896186).

210121120210 is a wasteful number, since it uses less digits than its factorization.

210121120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21012112028.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210121120210 its reverse (12021121012), we get a palindrome (222142241222).

The spelling of 210121120210 in words is "two hundred ten billion, one hundred twenty-one million, one hundred twenty thousand, two hundred ten".