103111123121 has 4 divisors (see below), whose sum is σ = 103294269552. Its totient is φ = 102927976692.

The previous prime is 103111123039. The next prime is 103111123201. The reversal of 103111123121 is 121321111301.

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 103111123121 - 2¹⁸ = 103110860977 is a prime.

It is a super-2 number, since 2×103111123121² (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 103111123121.

It is not an unprimeable number, because it can be changed into a prime (103111113121) 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, 91572371 + ... + 91573496.

It is an arithmetic number, because the mean of its divisors is an integer number (25823567388).

Almost surely, 2^103111123121 is an apocalyptic number.

It is an amenable number.

103111123121 is a deficient number, since it is larger than the sum of its proper divisors (183146431).

103111123121 is an equidigital number, since it uses as much as digits as its factorization.

103111123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183146430.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 103111123121 its reverse (121321111301), we get a palindrome (224432234422).

The spelling of 103111123121 in words is "one hundred three billion, one hundred eleven million, one hundred twenty-three thousand, one hundred twenty-one".