120072181 has 2 divisors, whose sum is σ = 120072182. Its totient is φ = 120072180.

The previous prime is 120072163. The next prime is 120072193. The reversal of 120072181 is 181270021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118069956 + 2002225 = 10866^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 120072181 - 2⁷ = 120072053 is a prime.

It is a super-2 number, since 2×120072181² = 28834657300193522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120072101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60036090 + 60036091.

It is an arithmetic number, because the mean of its divisors is an integer number (60036091).

Almost surely, 2^120072181 is an apocalyptic number.

It is an amenable number.

120072181 is a deficient number, since it is larger than the sum of its proper divisors (1).

120072181 is an equidigital number, since it uses as much as digits as its factorization.

120072181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 120072181 is about 10957.7452516473. The cubic root of 120072181 is about 493.3412915180.

The spelling of 120072181 in words is "one hundred twenty million, seventy-two thousand, one hundred eighty-one".