121230213023 has 4 divisors (see below), whose sum is σ = 125140865088. Its totient is φ = 117319560960.

The previous prime is 121230212993. The next prime is 121230213031. The reversal of 121230213023 is 320312032121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320312032121 = 14461 ⋅22150061.

It is a cyclic number.

It is not a de Polignac number, because 121230213023 - 2¹⁴ = 121230196639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121230212986 and 121230213004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121230213073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1955325986 + ... + 1955326047.

It is an arithmetic number, because the mean of its divisors is an integer number (31285216272).

Almost surely, 2^121230213023 is an apocalyptic number.

121230213023 is a deficient number, since it is larger than the sum of its proper divisors (3910652065).

121230213023 is an equidigital number, since it uses as much as digits as its factorization.

121230213023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910652064.

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

Adding to 121230213023 its reverse (320312032121), we get a palindrome (441542245144).

The spelling of 121230213023 in words is "one hundred twenty-one billion, two hundred thirty million, two hundred thirteen thousand, twenty-three".