1201112013009 has 32 divisors (see below), whose sum is σ = 1685836563840. Its totient is φ = 759565094400.

The previous prime is 1201112012993. The next prime is 1201112013029. The reversal of 1201112013009 is 9003102111021.

It is a happy number.

It is not a de Polignac number, because 1201112013009 - 2⁴ = 1201112012993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201112013029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4416054 + ... + 4680144.

It is an arithmetic number, because the mean of its divisors is an integer number (52682392620).

Almost surely, 2^{1201112013009} is an apocalyptic number.

It is an amenable number.

1201112013009 is a deficient number, since it is larger than the sum of its proper divisors (484724550831).

1201112013009 is a wasteful number, since it uses less digits than its factorization.

1201112013009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265041.

The product of its (nonzero) digits is 108, while the sum is 21.

The spelling of 1201112013009 in words is "one trillion, two hundred one billion, one hundred twelve million, thirteen thousand, nine".