120121201010221 has 8 divisors (see below), whose sum is σ = 122614394178744. Its totient is φ = 117644910846720.

The previous prime is 120121201010189. The next prime is 120121201010269. The reversal of 120121201010221 is 122010102121021.

It can be written as a sum of positive squares in 4 ways, for example, as 301687646121 + 119819513364100 = 549261^2 + 10946210^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120121201010221 - 2⁵ = 120121201010189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120121201010195 and 120121201010204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121201013221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4225736896 + ... + 4225765321.

It is an arithmetic number, because the mean of its divisors is an integer number (15326799272343).

Almost surely, 2^{120121201010221} is an apocalyptic number.

It is an amenable number.

120121201010221 is a deficient number, since it is larger than the sum of its proper divisors (2493193168523).

120121201010221 is an equidigital number, since it uses as much as digits as its factorization.

120121201010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8451502511.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120121201010221 its reverse (122010102121021), we get a palindrome (242131303131242).

The spelling of 120121201010221 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred one million, ten thousand, two hundred twenty-one".