120120221012021 has 4 divisors (see below), whose sum is σ = 120192278734752. Its totient is φ = 120048163289292.

The previous prime is 120120221011991. The next prime is 120120221012039. The reversal of 120120221012021 is 120210122021021.

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 not a de Polignac number, because 120120221012021 - 2¹⁰ = 120120221010997 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 (120120221015021) 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, 36028858865 + ... + 36028862198.

It is an arithmetic number, because the mean of its divisors is an integer number (30048069683688).

Almost surely, 2^{120120221012021} is an apocalyptic number.

It is an amenable number.

120120221012021 is a deficient number, since it is larger than the sum of its proper divisors (72057722731).

120120221012021 is an equidigital number, since it uses as much as digits as its factorization.

120120221012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72057722730.

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

Adding to 120120221012021 its reverse (120210122021021), we get a palindrome (240330343033042).

The spelling of 120120221012021 in words is "one hundred twenty trillion, one hundred twenty billion, two hundred twenty-one million, twelve thousand, twenty-one".