1111211111009 has 8 divisors (see below), whose sum is σ = 1112749892352. Its totient is φ = 1109672537440.

The previous prime is 1111211110991. The next prime is 1111211111029. The reversal of 1111211111009 is 9001111121111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111211111009 - 2³⁶ = 1042491634273 is a prime.

It is a super-2 number, since 2×1111211111009² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111211111029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12850532 + ... + 12936714.

It is an arithmetic number, because the mean of its divisors is an integer number (139093736544).

Almost surely, 2^{1111211111009} is an apocalyptic number.

It is an amenable number.

1111211111009 is a deficient number, since it is larger than the sum of its proper divisors (1538781343).

1111211111009 is an equidigital number, since it uses as much as digits as its factorization.

1111211111009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103887.

The product of its (nonzero) digits is 18, while the sum is 20.

The spelling of 1111211111009 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred eleven thousand, nine".