121123132223 has 4 divisors (see below), whose sum is σ = 121573404360. Its totient is φ = 120672860088.

The previous prime is 121123132211. The next prime is 121123132237. The reversal of 121123132223 is 322231321121.

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 121123132223 - 2¹⁸ = 121122870079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123132423) 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, 225135665 + ... + 225136202.

It is an arithmetic number, because the mean of its divisors is an integer number (30393351090).

Almost surely, 2^121123132223 is an apocalyptic number.

121123132223 is a deficient number, since it is larger than the sum of its proper divisors (450272137).

121123132223 is an equidigital number, since it uses as much as digits as its factorization.

121123132223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450272136.

The product of its digits is 864, while the sum is 23.

Adding to 121123132223 its reverse (322231321121), we get a palindrome (443354453344).

The spelling of 121123132223 in words is "one hundred twenty-one billion, one hundred twenty-three million, one hundred thirty-two thousand, two hundred twenty-three".