1211144204012 has 12 divisors (see below), whose sum is σ = 2120410861296. Its totient is φ = 605312529360.

The previous prime is 1211144203987. The next prime is 1211144204033. The reversal of 1211144204012 is 2104024411121.

It is a super-2 number, since 2×1211144204012² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64882664 + ... + 64901327.

It is an arithmetic number, because the mean of its divisors is an integer number (176700905108).

Almost surely, 2^{1211144204012} is an apocalyptic number.

It is an amenable number.

1211144204012 is a deficient number, since it is larger than the sum of its proper divisors (909266657284).

1211144204012 is a wasteful number, since it uses less digits than its factorization.

1211144204012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129786328 (or 129786326 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 1211144204012 its reverse (2104024411121), we get a palindrome (3315168615133).

The spelling of 1211144204012 in words is "one trillion, two hundred eleven billion, one hundred forty-four million, two hundred four thousand, twelve".