103121132123 has 4 divisors (see below), whose sum is σ = 106447620288. Its totient is φ = 99794643960.

The previous prime is 103121132117. The next prime is 103121132129. The reversal of 103121132123 is 321231121301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (103121132117) and next prime (103121132129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103121132123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103121132095 and 103121132104.

It is not an unprimeable number, because it can be changed into a prime (103121132129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1663244036 + ... + 1663244097.

It is an arithmetic number, because the mean of its divisors is an integer number (26611905072).

Almost surely, 2^103121132123 is an apocalyptic number.

103121132123 is a deficient number, since it is larger than the sum of its proper divisors (3326488165).

103121132123 is an equidigital number, since it uses as much as digits as its factorization.

103121132123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326488164.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 103121132123 its reverse (321231121301), we get a palindrome (424352253424).

The spelling of 103121132123 in words is "one hundred three billion, one hundred twenty-one million, one hundred thirty-two thousand, one hundred twenty-three".