121101312223 has 4 divisors (see below), whose sum is σ = 121107395448. Its totient is φ = 121095229000.

The previous prime is 121101312221. The next prime is 121101312247. The reversal of 121101312223 is 322213101121.

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

It is a cyclic number.

It is not a de Polignac number, because 121101312223 - 2¹ = 121101312221 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 121101312223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101312221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3011653 + ... + 3051598.

It is an arithmetic number, because the mean of its divisors is an integer number (30276848862).

Almost surely, 2^121101312223 is an apocalyptic number.

121101312223 is a deficient number, since it is larger than the sum of its proper divisors (6083225).

121101312223 is an equidigital number, since it uses as much as digits as its factorization.

121101312223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6083224.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121101312223 its reverse (322213101121), we get a palindrome (443314413344).

It can be divided in two parts, 1211013 and 12223, that added together give a square (1223236 = 1106²).

The spelling of 121101312223 in words is "one hundred twenty-one billion, one hundred one million, three hundred twelve thousand, two hundred twenty-three".