1100111001212 has 48 divisors (see below), whose sum is σ = 2105011738368. Its totient is φ = 500805365760.

The previous prime is 1100111001167. The next prime is 1100111001217. The reversal of 1100111001212 is 2121001110011.

It is a junction number, because it is equal to n+sod(n) for n = 1100111001193 and 1100111001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100111001217) by changing a digit.

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, 5416928 + ... + 5616344.

It is an arithmetic number, because the mean of its divisors is an integer number (43854411216).

Almost surely, 2^{1100111001212} is an apocalyptic number.

It is an amenable number.

1100111001212 is a deficient number, since it is larger than the sum of its proper divisors (1004900737156).

1100111001212 is a wasteful number, since it uses less digits than its factorization.

1100111001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202086 (or 202084 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1100111001212 its reverse (2121001110011), we get a palindrome (3221112111223).

The spelling of 1100111001212 in words is "one trillion, one hundred billion, one hundred eleven million, one thousand, two hundred twelve".