121130312223 has 4 divisors (see below), whose sum is σ = 161507082968. Its totient is φ = 80753541480.

The previous prime is 121130312221. The next prime is 121130312239. The reversal of 121130312223 is 322213031121.

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

It is not a de Polignac number, because 121130312223 - 2¹ = 121130312221 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 121130312223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121130312221) 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, 20188385368 + ... + 20188385373.

It is an arithmetic number, because the mean of its divisors is an integer number (40376770742).

Almost surely, 2^121130312223 is an apocalyptic number.

121130312223 is a deficient number, since it is larger than the sum of its proper divisors (40376770745).

121130312223 is an equidigital number, since it uses as much as digits as its factorization.

121130312223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40376770744.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121130312223 its reverse (322213031121), we get a palindrome (443343343344).

The spelling of 121130312223 in words is "one hundred twenty-one billion, one hundred thirty million, three hundred twelve thousand, two hundred twenty-three".