1212100111330 has 16 divisors (see below), whose sum is σ = 2182106495160. Its totient is φ = 484767534592.

The previous prime is 1212100111289. The next prime is 1212100111349. The reversal of 1212100111330 is 331110012121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1086416389969 + 125683721361 = 1042313^2 + 354519^2 .

It is an unprimeable number.

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, 8993509 + ... + 9127288.

Almost surely, 2^{1212100111330} is an apocalyptic number.

1212100111330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212100111330 is a deficient number, since it is larger than the sum of its proper divisors (970006383830).

1212100111330 is a wasteful number, since it uses less digits than its factorization.

1212100111330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18127493.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1212100111330 its reverse (331110012121), we get a palindrome (1543210123451).

The spelling of 1212100111330 in words is "one trillion, two hundred twelve billion, one hundred million, one hundred eleven thousand, three hundred thirty".