1211120100112 has 40 divisors (see below), whose sum is σ = 2527584646104. Its totient is φ = 558859951104.

The previous prime is 1211120100067. The next prime is 1211120100121. The reversal of 1211120100112 is 2110010211121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46309318416 + 1164810781696 = 215196^2 + 1079264^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1211120100092 and 1211120100101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369348 + ... + 1599580.

Almost surely, 2^{1211120100112} is an apocalyptic number.

It is an amenable number.

1211120100112 is an abundant number, since it is smaller than the sum of its proper divisors (1316464545992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211120100112 is a wasteful number, since it uses less digits than its factorization.

1211120100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234987 (or 1234981 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1211120100112 its reverse (2110010211121), we get a palindrome (3321130311233).

The spelling of 1211120100112 in words is "one trillion, two hundred eleven billion, one hundred twenty million, one hundred thousand, one hundred twelve".