120202221225221 has 2 divisors, whose sum is σ = 120202221225222. Its totient is φ = 120202221225220.

The previous prime is 120202221225193. The next prime is 120202221225239. The reversal of 120202221225221 is 122522122202021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118550068324900 + 1652152900321 = 10888070^2 + 1285361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120202221225221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120202223225221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60101110612610 + 60101110612611.

It is an arithmetic number, because the mean of its divisors is an integer number (60101110612611).

Almost surely, 2^{120202221225221} is an apocalyptic number.

It is an amenable number.

120202221225221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120202221225221 is an equidigital number, since it uses as much as digits as its factorization.

120202221225221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 120202221225221 its reverse (122522122202021), we get a palindrome (242724343427242).

The spelling of 120202221225221 in words is "one hundred twenty trillion, two hundred two billion, two hundred twenty-one million, two hundred twenty-five thousand, two hundred twenty-one".