2109321541 has 2 divisors, whose sum is σ = 2109321542. Its totient is φ = 2109321540.

The previous prime is 2109321523. The next prime is 2109321569. The reversal of 2109321541 is 1451239012.

It is an a-pointer prime, because the next prime (2109321569) can be obtained adding 2109321541 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1464669441 + 644652100 = 38271^2 + 25390^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109321541 - 2⁵ = 2109321509 is a prime.

It is a super-2 number, since 2×2109321541² = 8898474726653229362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2109321581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054660770 + 1054660771.

It is an arithmetic number, because the mean of its divisors is an integer number (1054660771).

Almost surely, 2^2109321541 is an apocalyptic number.

It is an amenable number.

2109321541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109321541 is an equidigital number, since it uses as much as digits as its factorization.

2109321541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2109321541 is about 45927.3506856209. The cubic root of 2109321541 is about 1282.4711257111.

The spelling of 2109321541 in words is "two billion, one hundred nine million, three hundred twenty-one thousand, five hundred forty-one".