1211120012012 has 12 divisors (see below), whose sum is σ = 2128964327616. Its totient is φ = 602844489840.

The previous prime is 1211120012009. The next prime is 1211120012023. The reversal of 1211120012012 is 2102100211121.

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, 678878039 + ... + 678879822.

It is an arithmetic number, because the mean of its divisors is an integer number (177413693968).

Almost surely, 2^{1211120012012} is an apocalyptic number.

It is an amenable number.

1211120012012 is a deficient number, since it is larger than the sum of its proper divisors (917844315604).

1211120012012 is a wasteful number, since it uses less digits than its factorization.

1211120012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357758088 (or 1357758086 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211120012012 its reverse (2102100211121), we get a palindrome (3313220223133).

The spelling of 1211120012012 in words is "one trillion, two hundred eleven billion, one hundred twenty million, twelve thousand, twelve".