1101001211111 has 8 divisors (see below), whose sum is σ = 1101859459584. Its totient is φ = 1100143296000.

The previous prime is 1101001211047. The next prime is 1101001211129. The reversal of 1101001211111 is 1111121001011.

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 1101001211111 - 2⁶ = 1101001211047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101001211092 and 1101001211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101001211161) 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, 6740570 + ... + 6901976.

It is an arithmetic number, because the mean of its divisors is an integer number (137732432448).

Almost surely, 2^{1101001211111} is an apocalyptic number.

1101001211111 is a deficient number, since it is larger than the sum of its proper divisors (858248473).

1101001211111 is a wasteful number, since it uses less digits than its factorization.

1101001211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166681.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1101001211111 its reverse (1111121001011), we get a palindrome (2212122212122).

The spelling of 1101001211111 in words is "one trillion, one hundred one billion, one million, two hundred eleven thousand, one hundred eleven".