121130823 has 16 divisors (see below), whose sum is σ = 176432256. Its totient is φ = 73311840.

The previous prime is 121130813. The next prime is 121130837. The reversal of 121130823 is 328031121.

It is not a de Polignac number, because 121130823 - 2⁵ = 121130791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121130823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121130803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27061 + ... + 31217.

It is an arithmetic number, because the mean of its divisors is an integer number (11027016).

Almost surely, 2^121130823 is an apocalyptic number.

121130823 is a deficient number, since it is larger than the sum of its proper divisors (55301433).

121130823 is a wasteful number, since it uses less digits than its factorization.

121130823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 121130823 is about 11005.9448935564. The cubic root of 121130823 is about 494.7869341156.

Adding to 121130823 its reverse (328031121), we get a palindrome (449161944).

The spelling of 121130823 in words is "one hundred twenty-one million, one hundred thirty thousand, eight hundred twenty-three".