103112113021 has 4 divisors (see below), whose sum is σ = 109177531452. Its totient is φ = 97046694592.

The previous prime is 103112113009. The next prime is 103112113043. The reversal of 103112113021 is 120311211301.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63116512900 + 39995600121 = 251230^2 + 199989^2 .

It is a cyclic number.

It is not a de Polignac number, because 103112113021 - 2⁵ = 103112112989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103112112986 and 103112113004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103112113721) 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, 3032709190 + ... + 3032709223.

It is an arithmetic number, because the mean of its divisors is an integer number (27294382863).

Almost surely, 2^103112113021 is an apocalyptic number.

It is an amenable number.

103112113021 is a deficient number, since it is larger than the sum of its proper divisors (6065418431).

103112113021 is an equidigital number, since it uses as much as digits as its factorization.

103112113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065418430.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 103112113021 its reverse (120311211301), we get a palindrome (223423324322).

The spelling of 103112113021 in words is "one hundred three billion, one hundred twelve million, one hundred thirteen thousand, twenty-one".