121023120103 has 4 divisors (see below), whose sum is σ = 121269603528. Its totient is φ = 120776636680.

The previous prime is 121023120089. The next prime is 121023120149. The reversal of 121023120103 is 301021320121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301021320121 = 25579 ⋅11768299.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121023120103 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 (121023150103) 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, 123240976 + ... + 123241957.

It is an arithmetic number, because the mean of its divisors is an integer number (30317400882).

Almost surely, 2^121023120103 is an apocalyptic number.

121023120103 is a deficient number, since it is larger than the sum of its proper divisors (246483425).

121023120103 is an equidigital number, since it uses as much as digits as its factorization.

121023120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246483424.

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

Adding to 121023120103 its reverse (301021320121), we get a palindrome (422044440224).

The spelling of 121023120103 in words is "one hundred twenty-one billion, twenty-three million, one hundred twenty thousand, one hundred three".