121302310223 has 4 divisors (see below), whose sum is σ = 127686642360. Its totient is φ = 114917978088.

The previous prime is 121302310193. The next prime is 121302310231. The reversal of 121302310223 is 322013203121.

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 121302310223 - 2⁶ = 121302310159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121302310195 and 121302310204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121302318223) 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, 3192166040 + ... + 3192166077.

It is an arithmetic number, because the mean of its divisors is an integer number (31921660590).

Almost surely, 2^121302310223 is an apocalyptic number.

121302310223 is a deficient number, since it is larger than the sum of its proper divisors (6384332137).

121302310223 is an equidigital number, since it uses as much as digits as its factorization.

121302310223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6384332136.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121302310223 its reverse (322013203121), we get a palindrome (443315513344).

The spelling of 121302310223 in words is "one hundred twenty-one billion, three hundred two million, three hundred ten thousand, two hundred twenty-three".