120101110100221 has 4 divisors (see below), whose sum is σ = 120221572598812. Its totient is φ = 119980647601632.

The previous prime is 120101110100207. The next prime is 120101110100287. The reversal of 120101110100221 is 122001011101021.

It is a happy number.

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 105263290844100 + 14837819256121 = 10259790^2 + 3851989^2 .

It is a cyclic number.

It is not a de Polignac number, because 120101110100221 - 2⁷ = 120101110100093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120101110109221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60231247800 + ... + 60231249793.

It is an arithmetic number, because the mean of its divisors is an integer number (30055393149703).

Almost surely, 2^{120101110100221} is an apocalyptic number.

It is an amenable number.

120101110100221 is a deficient number, since it is larger than the sum of its proper divisors (120462498591).

120101110100221 is an equidigital number, since it uses as much as digits as its factorization.

120101110100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120462498590.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 120101110100221 its reverse (122001011101021), we get a palindrome (242102121201242).

The spelling of 120101110100221 in words is "one hundred twenty trillion, one hundred one billion, one hundred ten million, one hundred thousand, two hundred twenty-one".