103312021121 has 4 divisors (see below), whose sum is σ = 109389198852. Its totient is φ = 97234843392.

The previous prime is 103312021103. The next prime is 103312021129. The reversal of 103312021121 is 121120213301.

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 34843448896 + 68468572225 = 186664^2 + 261665^2 .

It is a cyclic number.

It is not a de Polignac number, because 103312021121 - 2¹⁴ = 103312004737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 6077177713 = 103312021121 / (1 + 0 + 3 + 3 + 1 + 2 + 0 + 2 + 1 + 1 + 2 + 1).

It is a self number, because there is not a number n which added to its sum of digits gives 103312021121.

It is not an unprimeable number, because it can be changed into a prime (103312021129) 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, 3038588840 + ... + 3038588873.

It is an arithmetic number, because the mean of its divisors is an integer number (27347299713).

Almost surely, 2^103312021121 is an apocalyptic number.

It is an amenable number.

103312021121 is a deficient number, since it is larger than the sum of its proper divisors (6077177731).

103312021121 is an equidigital number, since it uses as much as digits as its factorization.

103312021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6077177730.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 103312021121 its reverse (121120213301), we get a palindrome (224432234422).

The spelling of 103312021121 in words is "one hundred three billion, three hundred twelve million, twenty-one thousand, one hundred twenty-one".