1100012012109 has 12 divisors (see below), whose sum is σ = 1599026663676. Its totient is φ = 728670376512.

The previous prime is 1100012012053. The next prime is 1100012012123. The reversal of 1100012012109 is 9012102100011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 278229875625 + 821782136484 = 527475^2 + 906522^2 .

It is not a de Polignac number, because 1100012012109 - 2¹³ = 1100012003917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100012012091 and 1100012012100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100012012009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 389245584 + ... + 389248409.

It is an arithmetic number, because the mean of its divisors is an integer number (133252221973).

Almost surely, 2^{1100012012109} is an apocalyptic number.

It is an amenable number.

1100012012109 is a deficient number, since it is larger than the sum of its proper divisors (499014651567).

1100012012109 is a wasteful number, since it uses less digits than its factorization.

1100012012109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778494156 (or 778494153 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 1100012012109 in words is "one trillion, one hundred billion, twelve million, twelve thousand, one hundred nine".