103123220121 has 8 divisors (see below), whose sum is σ = 152775140960. Its totient is φ = 68748813396.

The previous prime is 103123220117. The next prime is 103123220147. The reversal of 103123220121 is 121022321301.

103123220121 is a `hidden beast` number, since 10 + 312 + 3 + 220 + 121 = 666.

It is not a de Polignac number, because 103123220121 - 2² = 103123220117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103123220094 and 103123220103.

It is not an unprimeable number, because it can be changed into a prime (103123220111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909689235 + ... + 1909689288.

It is an arithmetic number, because the mean of its divisors is an integer number (19096892620).

Almost surely, 2^103123220121 is an apocalyptic number.

It is an amenable number.

103123220121 is a deficient number, since it is larger than the sum of its proper divisors (49651920839).

103123220121 is an equidigital number, since it uses as much as digits as its factorization.

103123220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819378532 (or 3819378526 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 103123220121 its reverse (121022321301), we get a palindrome (224145541422).

The spelling of 103123220121 in words is "one hundred three billion, one hundred twenty-three million, two hundred twenty thousand, one hundred twenty-one".