103111312021 has 8 divisors (see below), whose sum is σ = 109257022400. Its totient is φ = 97037481600.

The previous prime is 103111312013. The next prime is 103111312033. The reversal of 103111312021 is 120213111301.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103111312021 - 2³ = 103111312013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103111311986 and 103111312004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103111312061) 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, 17967036 + ... + 17972773.

It is an arithmetic number, because the mean of its divisors is an integer number (13657127800).

Almost surely, 2^103111312021 is an apocalyptic number.

It is an amenable number.

103111312021 is a deficient number, since it is larger than the sum of its proper divisors (6145710379).

103111312021 is a wasteful number, since it uses less digits than its factorization.

103111312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35939979.

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

Adding to 103111312021 its reverse (120213111301), we get a palindrome (223324423322).

The spelling of 103111312021 in words is "one hundred three billion, one hundred eleven million, three hundred twelve thousand, twenty-one".