121023112003 has 4 divisors (see below), whose sum is σ = 124294006960. Its totient is φ = 117752217048.

The previous prime is 121023111997. The next prime is 121023112027. The reversal of 121023112003 is 300211320121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300211320121 = 311 ⋅965309711.

It is a cyclic number.

It is not a de Polignac number, because 121023112003 - 2⁵ = 121023111971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121023112103) 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, 1635447423 + ... + 1635447496.

It is an arithmetic number, because the mean of its divisors is an integer number (31073501740).

Almost surely, 2^121023112003 is an apocalyptic number.

121023112003 is a deficient number, since it is larger than the sum of its proper divisors (3270894957).

121023112003 is an equidigital number, since it uses as much as digits as its factorization.

121023112003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270894956.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121023112003 its reverse (300211320121), we get a palindrome (421234432124).

The spelling of 121023112003 in words is "one hundred twenty-one billion, twenty-three million, one hundred twelve thousand, three".