1210110111009 has 12 divisors (see below), whose sum is σ = 1758040510356. Its totient is φ = 802076835552.

The previous prime is 1210110110971. The next prime is 1210110111013. The reversal of 1210110111009 is 9001110110121.

It can be written as a sum of positive squares in 2 ways, for example, as 488412288225 + 721697822784 = 698865^2 + 849528^2 .

It is not a de Polignac number, because 1210110111009 - 2⁹ = 1210110110497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210110110982 and 1210110111000.

It is not an unprimeable number, because it can be changed into a prime (1210110111709) 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, 388601562 + ... + 388604675.

It is an arithmetic number, because the mean of its divisors is an integer number (146503375863).

Almost surely, 2^{1210110111009} is an apocalyptic number.

It is an amenable number.

1210110111009 is a deficient number, since it is larger than the sum of its proper divisors (547930399347).

1210110111009 is a wasteful number, since it uses less digits than its factorization.

1210110111009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777206416 (or 777206413 counting only the distinct ones).

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

The spelling of 1210110111009 in words is "one trillion, two hundred ten billion, one hundred ten million, one hundred eleven thousand, nine".