120141221 has 2 divisors, whose sum is σ = 120141222. Its totient is φ = 120141220.

The previous prime is 120141211. The next prime is 120141223. The reversal of 120141221 is 122141021.

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., 64802500 + 55338721 = 8050^2 + 7439^2 .

It is a cyclic number.

It is not a de Polignac number, because 120141221 - 2¹⁰ = 120140197 is a prime.

Together with 120141223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 120141196 and 120141205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120141223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60070610 + 60070611.

It is an arithmetic number, because the mean of its divisors is an integer number (60070611).

Almost surely, 2^120141221 is an apocalyptic number.

It is an amenable number.

120141221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120141221 is an equidigital number, since it uses as much as digits as its factorization.

120141221 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 14.

The square root of 120141221 is about 10960.8950820633. The cubic root of 120141221 is about 493.4358284221.

Adding to 120141221 its reverse (122141021), we get a palindrome (242282242).

The spelling of 120141221 in words is "one hundred twenty million, one hundred forty-one thousand, two hundred twenty-one".