202110121210 has 16 divisors (see below), whose sum is σ = 363804123816. Its totient is φ = 80842736128.

The previous prime is 202110121141. The next prime is 202110121217. The reversal of 202110121210 is 12121011202.

It can be written as a sum of positive squares in 4 ways, for example, as 118054775281 + 84055345929 = 343591^2 + 289923^2 .

It is not an unprimeable number, because it can be changed into a prime (202110121217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698982 + ... + 944878.

Almost surely, 2^202110121210 is an apocalyptic number.

202110121210 is a deficient number, since it is larger than the sum of its proper divisors (161694002606).

202110121210 is a wasteful number, since it uses less digits than its factorization.

202110121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328097.

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

Adding to 202110121210 its reverse (12121011202), we get a palindrome (214231132412).

The spelling of 202110121210 in words is "two hundred two billion, one hundred ten million, one hundred twenty-one thousand, two hundred ten".