1101211112091 has 8 divisors (see below), whose sum is σ = 1468286617680. Its totient is φ = 734138173952.

The previous prime is 1101211112087. The next prime is 1101211112137. The reversal of 1101211112091 is 1902111121011.

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 1101211112091 - 2² = 1101211112087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101211112081) 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, 862891 + ... + 1716683.

It is an arithmetic number, because the mean of its divisors is an integer number (183535827210).

Almost surely, 2^{1101211112091} is an apocalyptic number.

1101211112091 is a deficient number, since it is larger than the sum of its proper divisors (367075505589).

1101211112091 is an equidigital number, since it uses as much as digits as its factorization.

1101211112091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283725.

The product of its (nonzero) digits is 36, while the sum is 21.

The spelling of 1101211112091 in words is "one trillion, one hundred one billion, two hundred eleven million, one hundred twelve thousand, ninety-one".