121040123223 has 4 divisors (see below), whose sum is σ = 161386830968. Its totient is φ = 80693415480.

The previous prime is 121040123221. The next prime is 121040123231. The reversal of 121040123223 is 322321040121.

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

It is not a de Polignac number, because 121040123223 - 2¹ = 121040123221 is a prime.

It is a super-2 number, since 2×121040123223² (a number of 23 digits) contains 22 as substring.

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 121040123223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121040123221) 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, 20173353868 + ... + 20173353873.

It is an arithmetic number, because the mean of its divisors is an integer number (40346707742).

Almost surely, 2^121040123223 is an apocalyptic number.

121040123223 is a deficient number, since it is larger than the sum of its proper divisors (40346707745).

121040123223 is an equidigital number, since it uses as much as digits as its factorization.

121040123223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40346707744.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 121040123223 its reverse (322321040121), we get a palindrome (443361163344).

The spelling of 121040123223 in words is "one hundred twenty-one billion, forty million, one hundred twenty-three thousand, two hundred twenty-three".