121130321111 has 4 divisors (see below), whose sum is σ = 121138367112. Its totient is φ = 121122275112.

The previous prime is 121130321099. The next prime is 121130321141. The reversal of 121130321111 is 111123031121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121130321111 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 121130321111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121130321141) 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, 4000376 + ... + 4030541.

It is an arithmetic number, because the mean of its divisors is an integer number (30284591778).

Almost surely, 2^121130321111 is an apocalyptic number.

121130321111 is a deficient number, since it is larger than the sum of its proper divisors (8046001).

121130321111 is an equidigital number, since it uses as much as digits as its factorization.

121130321111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8046000.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 121130321111 its reverse (111123031121), we get a palindrome (232253352232).

The spelling of 121130321111 in words is "one hundred twenty-one billion, one hundred thirty million, three hundred twenty-one thousand, one hundred eleven".