120211021020221 has 4 divisors (see below), whose sum is σ = 120226894660572. Its totient is φ = 120195147379872.

The previous prime is 120211021020193. The next prime is 120211021020239. The reversal of 120211021020221 is 122020120112021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119880907572196 + 330113448025 = 10949014^2 + 574555^2 .

It is a cyclic number.

It is not a de Polignac number, because 120211021020221 - 2²² = 120211016825917 is a prime.

It is a super-2 number, since 2×120211021020221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120211021020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211021020721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7936808816 + ... + 7936823961.

It is an arithmetic number, because the mean of its divisors is an integer number (30056723665143).

Almost surely, 2^{120211021020221} is an apocalyptic number.

It is an amenable number.

120211021020221 is a deficient number, since it is larger than the sum of its proper divisors (15873640351).

120211021020221 is an equidigital number, since it uses as much as digits as its factorization.

120211021020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15873640350.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120211021020221 its reverse (122020120112021), we get a palindrome (242231141132242).

The spelling of 120211021020221 in words is "one hundred twenty trillion, two hundred eleven billion, twenty-one million, twenty thousand, two hundred twenty-one".