1210202002120 has 32 divisors (see below), whose sum is σ = 2774331009720. Its totient is φ = 474947200000.

The previous prime is 1210202002057. The next prime is 1210202002157. The reversal of 1210202002120 is 212002020121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 659724070756 + 550477931364 = 812234^2 + 741942^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1210202002120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285422881 + ... + 285427120.

Almost surely, 2^{1210202002120} is an apocalyptic number.

1210202002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210202002120 is an abundant number, since it is smaller than the sum of its proper divisors (1564129007600).

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

1210202002120 is a wasteful number, since it uses less digits than its factorization.

1210202002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570850065 (or 570850061 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1210202002120 its reverse (212002020121), we get a palindrome (1422204022241).

The spelling of 1210202002120 in words is "one trillion, two hundred ten billion, two hundred two million, two thousand, one hundred twenty".