120238121 has 2 divisors, whose sum is σ = 120238122. Its totient is φ = 120238120.

The previous prime is 120238109. The next prime is 120238141. The reversal of 120238121 is 121832021.

It is an a-pointer prime, because the next prime (120238141) can be obtained adding 120238121 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79852096 + 40386025 = 8936^2 + 6355^2 .

It is an emirp because it is prime and its reverse (121832021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120238121 is a prime.

It is a super-2 number, since 2×120238121² = 28914411483221282, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 120238093 and 120238102.

It is not a weakly prime, because it can be changed into another prime (120238141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60119060 + 60119061.

It is an arithmetic number, because the mean of its divisors is an integer number (60119061).

Almost surely, 2^120238121 is an apocalyptic number.

It is an amenable number.

120238121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120238121 is an equidigital number, since it uses as much as digits as its factorization.

120238121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 120238121 is about 10965.3144505755. The cubic root of 120238121 is about 493.5684531292.

The spelling of 120238121 in words is "one hundred twenty million, two hundred thirty-eight thousand, one hundred twenty-one".