120401221 has 2 divisors, whose sum is σ = 120401222. Its totient is φ = 120401220.

The previous prime is 120401201. The next prime is 120401227. The reversal of 120401221 is 122104021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90041121 + 30360100 = 9489^2 + 5510^2 .

It is a cyclic number.

It is not a de Polignac number, because 120401221 - 2⁵ = 120401189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120401227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60200610 + 60200611.

It is an arithmetic number, because the mean of its divisors is an integer number (60200611).

Almost surely, 2^120401221 is an apocalyptic number.

It is an amenable number.

120401221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120401221 is an equidigital number, since it uses as much as digits as its factorization.

120401221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 120401221 is about 10972.7490174523. The cubic root of 120401221 is about 493.7915233786.

Adding to 120401221 its reverse (122104021), we get a palindrome (242505242).

The spelling of 120401221 in words is "one hundred twenty million, four hundred one thousand, two hundred twenty-one".