911242113121 has 4 divisors (see below), whose sum is σ = 920089124032. Its totient is φ = 902395102212.

The previous prime is 911242113073. The next prime is 911242113143. The reversal of 911242113121 is 121311242119.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 911242113121 - 2²¹ = 911240015969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 911242113121.

It is not an unprimeable number, because it can be changed into a prime (911242113191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4423505301 + ... + 4423505506.

It is an arithmetic number, because the mean of its divisors is an integer number (230022281008).

Almost surely, 2^911242113121 is an apocalyptic number.

It is an amenable number.

911242113121 is a deficient number, since it is larger than the sum of its proper divisors (8847010911).

911242113121 is a wasteful number, since it uses less digits than its factorization.

911242113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847010910.

The product of its digits is 864, while the sum is 28.

The spelling of 911242113121 in words is "nine hundred eleven billion, two hundred forty-two million, one hundred thirteen thousand, one hundred twenty-one".