35820121 has 2 divisors, whose sum is σ = 35820122. Its totient is φ = 35820120.

The previous prime is 35820091. The next prime is 35820137. The reversal of 35820121 is 12102853.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30958096 + 4862025 = 5564^2 + 2205^2 .

It is a cyclic number.

It is not a de Polignac number, because 35820121 - 2¹¹ = 35818073 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 35820092 and 35820101.

It is not a weakly prime, because it can be changed into another prime (35826121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17910060 + 17910061.

It is an arithmetic number, because the mean of its divisors is an integer number (17910061).

Almost surely, 2^35820121 is an apocalyptic number.

It is an amenable number.

35820121 is a deficient number, since it is larger than the sum of its proper divisors (1).

35820121 is an equidigital number, since it uses as much as digits as its factorization.

35820121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 35820121 is about 5984.9913116061. The cubic root of 35820121 is about 329.6418550990.

Adding to 35820121 its reverse (12102853), we get a palindrome (47922974).

The spelling of 35820121 in words is "thirty-five million, eight hundred twenty thousand, one hundred twenty-one".