1211120020112 has 80 divisors (see below), whose sum is σ = 2400463503360. Its totient is φ = 591777897600.

The previous prime is 1211120020079. The next prime is 1211120020147. The reversal of 1211120020112 is 2110200211121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112437287 + ... + 112448057.

It is an arithmetic number, because the mean of its divisors is an integer number (30005793792).

Almost surely, 2^{1211120020112} is an apocalyptic number.

It is an amenable number.

1211120020112 is a deficient number, since it is larger than the sum of its proper divisors (1189343483248).

1211120020112 is a wasteful number, since it uses less digits than its factorization.

1211120020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11532 (or 11526 counting only the distinct ones).

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

Adding to 1211120020112 its reverse (2110200211121), we get a palindrome (3321320231233).

The spelling of 1211120020112 in words is "one trillion, two hundred eleven billion, one hundred twenty million, twenty thousand, one hundred twelve".