8212108133 has 2 divisors, whose sum is σ = 8212108134. Its totient is φ = 8212108132.

The previous prime is 8212108013. The next prime is 8212108139. The reversal of 8212108133 is 3318012128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6254753569 + 1957354564 = 79087^2 + 44242^2 .

It is a cyclic number.

It is not a de Polignac number, because 8212108133 - 2¹² = 8212104037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8212108096 and 8212108105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8212108139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4106054066 + 4106054067.

It is an arithmetic number, because the mean of its divisors is an integer number (4106054067).

Almost surely, 2^8212108133 is an apocalyptic number.

It is an amenable number.

8212108133 is a deficient number, since it is larger than the sum of its proper divisors (1).

8212108133 is an equidigital number, since it uses as much as digits as its factorization.

8212108133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 8212108133 is about 90620.6826999223. The cubic root of 8212108133 is about 2017.5217240630.

The spelling of 8212108133 in words is "eight billion, two hundred twelve million, one hundred eight thousand, one hundred thirty-three".