361105021 has 2 divisors, whose sum is σ = 361105022. Its totient is φ = 361105020.

The previous prime is 361104983. The next prime is 361105027. The reversal of 361105021 is 120501163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207072100 + 154032921 = 14390^2 + 12411^2 .

It is a cyclic number.

It is not a de Polignac number, because 361105021 - 2¹³ = 361096829 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 361105021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361105027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180552510 + 180552511.

It is an arithmetic number, because the mean of its divisors is an integer number (180552511).

Almost surely, 2^361105021 is an apocalyptic number.

It is an amenable number.

361105021 is a deficient number, since it is larger than the sum of its proper divisors (1).

361105021 is an equidigital number, since it uses as much as digits as its factorization.

361105021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 361105021 is about 19002.7635095530. The cubic root of 361105021 is about 712.1057770349.

Adding to 361105021 its reverse (120501163), we get a palindrome (481606184).

The spelling of 361105021 in words is "three hundred sixty-one million, one hundred five thousand, twenty-one".