120521971 has 2 divisors, whose sum is σ = 120521972. Its totient is φ = 120521970.

The previous prime is 120521939. The next prime is 120521977. The reversal of 120521971 is 179125021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120521971 - 2⁵ = 120521939 is a prime.

It is not a weakly prime, because it can be changed into another prime (120521977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60260985 + 60260986.

It is an arithmetic number, because the mean of its divisors is an integer number (60260986).

Almost surely, 2^120521971 is an apocalyptic number.

120521971 is a deficient number, since it is larger than the sum of its proper divisors (1).

120521971 is an equidigital number, since it uses as much as digits as its factorization.

120521971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 120521971 is about 10978.2499060643. The cubic root of 120521971 is about 493.9565422058.

Adding to 120521971 its reverse (179125021), we get a palindrome (299646992).

The spelling of 120521971 in words is "one hundred twenty million, five hundred twenty-one thousand, nine hundred seventy-one".