162000121 has 2 divisors, whose sum is σ = 162000122. Its totient is φ = 162000120.

The previous prime is 162000107. The next prime is 162000131. The reversal of 162000121 is 121000261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136890000 + 25110121 = 11700^2 + 5011^2 .

It is an emirp because it is prime and its reverse (121000261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162000121 - 2⁹ = 161999609 is a prime.

It is not a weakly prime, because it can be changed into another prime (162000131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81000060 + 81000061.

It is an arithmetic number, because the mean of its divisors is an integer number (81000061).

Almost surely, 2^162000121 is an apocalyptic number.

It is an amenable number.

162000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

162000121 is an equidigital number, since it uses as much as digits as its factorization.

162000121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 162000121 is about 12727.9268146859. The cubic root of 162000121 is about 545.1363135728.

Adding to 162000121 its reverse (121000261), we get a palindrome (283000382).

The spelling of 162000121 in words is "one hundred sixty-two million, one hundred twenty-one", and thus it is an aban number.