1121211001191 has 8 divisors (see below), whose sum is σ = 1496162424064. Its totient is φ = 746866789560.

The previous prime is 1121211001189. The next prime is 1121211001217. The reversal of 1121211001191 is 1911001121211.

It is a happy number.

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

It is not a de Polignac number, because 1121211001191 - 2¹ = 1121211001189 is a prime.

It is a super-2 number, since 2×1121211001191² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121211001171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151798501 + ... + 151805886.

It is an arithmetic number, because the mean of its divisors is an integer number (187020303008).

Almost surely, 2^{1121211001191} is an apocalyptic number.

1121211001191 is a deficient number, since it is larger than the sum of its proper divisors (374951422873).

1121211001191 is a wasteful number, since it uses less digits than its factorization.

1121211001191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303605621.

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

The spelling of 1121211001191 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, one thousand, one hundred ninety-one".