1212201221110 has 24 divisors (see below), whose sum is σ = 2398355145648. Its totient is φ = 440800443600.

The previous prime is 1212201221093. The next prime is 1212201221123. The reversal of 1212201221110 is 111221022121.

It is a congruent number.

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, 500908386 + ... + 500910805.

It is an arithmetic number, because the mean of its divisors is an integer number (99931464402).

Almost surely, 2^{1212201221110} is an apocalyptic number.

1212201221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212201221110 is a deficient number, since it is larger than the sum of its proper divisors (1186153924538).

1212201221110 is a wasteful number, since it uses less digits than its factorization.

1212201221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001819220 (or 1001819209 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212201221110 its reverse (111221022121), we get a palindrome (1323422243231).

The spelling of 1212201221110 in words is "one trillion, two hundred twelve billion, two hundred one million, two hundred twenty-one thousand, one hundred ten".