103121131123 has 4 divisors (see below), whose sum is σ = 104084880120. Its totient is φ = 102157382128.

The previous prime is 103121131103. The next prime is 103121131133. The reversal of 103121131123 is 321131121301.

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

It is a cyclic number.

It is not a de Polignac number, because 103121131123 - 2⁹ = 103121130611 is a prime.

It is a super-2 number, since 2×103121131123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103121131123.

It is not an unprimeable number, because it can be changed into a prime (103121131103) 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, 481874338 + ... + 481874551.

It is an arithmetic number, because the mean of its divisors is an integer number (26021220030).

Almost surely, 2^103121131123 is an apocalyptic number.

103121131123 is a deficient number, since it is larger than the sum of its proper divisors (963748997).

103121131123 is an equidigital number, since it uses as much as digits as its factorization.

103121131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963748996.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 103121131123 its reverse (321131121301), we get a palindrome (424252252424).

The spelling of 103121131123 in words is "one hundred three billion, one hundred twenty-one million, one hundred thirty-one thousand, one hundred twenty-three".