120221137 has 2 divisors, whose sum is σ = 120221138. Its totient is φ = 120221136.

The previous prime is 120221117. The next prime is 120221147. The reversal of 120221137 is 731122021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61606801 + 58614336 = 7849^2 + 7656^2 .

It is a cyclic number.

It is not a de Polignac number, because 120221137 - 2²³ = 111832529 is a prime.

It is not a weakly prime, because it can be changed into another prime (120221117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110568 + 60110569.

It is an arithmetic number, because the mean of its divisors is an integer number (60110569).

Almost surely, 2^120221137 is an apocalyptic number.

It is an amenable number.

120221137 is a deficient number, since it is larger than the sum of its proper divisors (1).

120221137 is an equidigital number, since it uses as much as digits as its factorization.

120221137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 120221137 is about 10964.5399812304. The cubic root of 120221137 is about 493.5452126869.

Adding to 120221137 its reverse (731122021), we get a palindrome (851343158).

The spelling of 120221137 in words is "one hundred twenty million, two hundred twenty-one thousand, one hundred thirty-seven".