120421023444221 has 4 divisors (see below), whose sum is σ = 120422674273500. Its totient is φ = 120419372614944.

The previous prime is 120421023444199. The next prime is 120421023444223. The reversal of 120421023444221 is 122444320124021.

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 59912460818596 + 60508562625625 = 7740314^2 + 7778725^2 .

It is a cyclic number.

It is not a de Polignac number, because 120421023444221 - 2¹⁰ = 120421023443197 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 (120421023444223) 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, 825305216 + ... + 825451113.

It is an arithmetic number, because the mean of its divisors is an integer number (30105668568375).

Almost surely, 2^{120421023444221} is an apocalyptic number.

It is an amenable number.

120421023444221 is a deficient number, since it is larger than the sum of its proper divisors (1650829279).

120421023444221 is an equidigital number, since it uses as much as digits as its factorization.

120421023444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650829278.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 120421023444221 its reverse (122444320124021), we get a palindrome (242865343568242).

The spelling of 120421023444221 in words is "one hundred twenty trillion, four hundred twenty-one billion, twenty-three million, four hundred forty-four thousand, two hundred twenty-one".