1121571711111 has 8 divisors (see below), whose sum is σ = 1495544024304. Its totient is φ = 747656936000.

The previous prime is 1121571711101. The next prime is 1121571711131. The reversal of 1121571711111 is 1111171751211.

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 1121571711111 - 2⁶ = 1121571711047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121571711101) 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, 14339016 + ... + 14417021.

It is an arithmetic number, because the mean of its divisors is an integer number (186943003038).

Almost surely, 2^{1121571711111} is an apocalyptic number.

1121571711111 is a deficient number, since it is larger than the sum of its proper divisors (373972313193).

1121571711111 is a wasteful number, since it uses less digits than its factorization.

1121571711111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28769041.

The product of its digits is 490, while the sum is 30.

The spelling of 1121571711111 in words is "one trillion, one hundred twenty-one billion, five hundred seventy-one million, seven hundred eleven thousand, one hundred eleven".