1210201221010 has 16 divisors (see below), whose sum is σ = 2178379472472. Its totient is φ = 484076649600.

The previous prime is 1210201220999. The next prime is 1210201221017. The reversal of 1210201221010 is 101221020121.

It can be written as a sum of positive squares in 4 ways, for example, as 1195066562481 + 15134658529 = 1093191^2 + 123023^2 .

It is not an unprimeable number, because it can be changed into a prime (1210201221017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1088230 + ... + 1898590.

Almost surely, 2^{1210201221010} is an apocalyptic number.

1210201221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1210201221010 is a deficient number, since it is larger than the sum of its proper divisors (968178251462).

1210201221010 is a wasteful number, since it uses less digits than its factorization.

1210201221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959709.

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

Adding to 1210201221010 its reverse (101221020121), we get a palindrome (1311422241131).

The spelling of 1210201221010 in words is "one trillion, two hundred ten billion, two hundred one million, two hundred twenty-one thousand, ten".