123020103121 has 4 divisors (see below), whose sum is σ = 123039916144. Its totient is φ = 123000290100.

The previous prime is 123020103119. The next prime is 123020103137. The reversal of 123020103121 is 121301020321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123020103121 - 2¹ = 123020103119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123020103095 and 123020103104.

It is not an unprimeable number, because it can be changed into a prime (123020103191) 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, 9897195 + ... + 9909616.

It is an arithmetic number, because the mean of its divisors is an integer number (30759979036).

Almost surely, 2^123020103121 is an apocalyptic number.

It is an amenable number.

123020103121 is a deficient number, since it is larger than the sum of its proper divisors (19813023).

123020103121 is an equidigital number, since it uses as much as digits as its factorization.

123020103121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19813022.

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

Adding to 123020103121 its reverse (121301020321), we get a palindrome (244321123442).

The spelling of 123020103121 in words is "one hundred twenty-three billion, twenty million, one hundred three thousand, one hundred twenty-one".