103212133105 has 4 divisors (see below), whose sum is σ = 123854559732. Its totient is φ = 82569706480.

The previous prime is 103212133097. The next prime is 103212133109. The reversal of 103212133105 is 501331212301.

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 39523030416 + 63689102689 = 198804^2 + 252367^2 .

It is not a de Polignac number, because 103212133105 - 2³ = 103212133097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103212133109) 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, 10321213306 + ... + 10321213315.

It is an arithmetic number, because the mean of its divisors is an integer number (30963639933).

Almost surely, 2^103212133105 is an apocalyptic number.

It is an amenable number.

103212133105 is a deficient number, since it is larger than the sum of its proper divisors (20642426627).

103212133105 is an equidigital number, since it uses as much as digits as its factorization.

103212133105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20642426626.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 103212133105 its reverse (501331212301), we get a palindrome (604543345406).

The spelling of 103212133105 in words is "one hundred three billion, two hundred twelve million, one hundred thirty-three thousand, one hundred five".