120021112010221 has 4 divisors (see below), whose sum is σ = 120021135980832. Its totient is φ = 120021088039612.

The previous prime is 120021112010207. The next prime is 120021112010269. The reversal of 120021112010221 is 122010211120021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120021112010221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021112010195 and 120021112010204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021112010281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1298401 + ... + 15547606.

It is an arithmetic number, because the mean of its divisors is an integer number (30005283995208).

Almost surely, 2^{120021112010221} is an apocalyptic number.

It is an amenable number.

120021112010221 is a deficient number, since it is larger than the sum of its proper divisors (23970611).

120021112010221 is an equidigital number, since it uses as much as digits as its factorization.

120021112010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23970610.

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

Adding to 120021112010221 its reverse (122010211120021), we get a palindrome (242031323130242).

The spelling of 120021112010221 in words is "one hundred twenty trillion, twenty-one billion, one hundred twelve million, ten thousand, two hundred twenty-one".