9121012211111 has 8 divisors (see below), whose sum is σ = 9601157626800. Its totient is φ = 8640876009600.

The previous prime is 9121012211063. The next prime is 9121012211117. The reversal of 9121012211111 is 1111122101219.

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 9121012211111 - 2³⁸ = 8846134304167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9121012211117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223490 + ... + 4276911.

It is an arithmetic number, because the mean of its divisors is an integer number (1200144703350).

Almost surely, 2^{9121012211111} is an apocalyptic number.

9121012211111 is a deficient number, since it is larger than the sum of its proper divisors (480145415689).

9121012211111 is a wasteful number, since it uses less digits than its factorization.

9121012211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607089.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 9121012211111 in words is "nine trillion, one hundred twenty-one billion, twelve million, two hundred eleven thousand, one hundred eleven".