121203023 has 4 divisors (see below), whose sum is σ = 121225560. Its totient is φ = 121180488.

The previous prime is 121202981. The next prime is 121203037. The reversal of 121203023 is 320302121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320302121 = 8431 ⋅37991.

It is a cyclic number.

It is not a de Polignac number, because 121203023 - 2¹⁸ = 120940879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121202989 and 121203007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121203923) 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, 2033 + ... + 15701.

It is an arithmetic number, because the mean of its divisors is an integer number (30306390).

Almost surely, 2^121203023 is an apocalyptic number.

121203023 is a deficient number, since it is larger than the sum of its proper divisors (22537).

121203023 is an equidigital number, since it uses as much as digits as its factorization.

121203023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22536.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 121203023 is about 11009.2244504325. The cubic root of 121203023 is about 494.8852204709.

Adding to 121203023 its reverse (320302121), we get a palindrome (441505144).

The spelling of 121203023 in words is "one hundred twenty-one million, two hundred three thousand, twenty-three".