120222022021 has 4 divisors (see below), whose sum is σ = 120606118252. Its totient is φ = 119837925792.

The previous prime is 120222022009. The next prime is 120222022031. The reversal of 120222022021 is 120220222021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120220222021 = 1987 ⋅60503383.

It can be written as a sum of positive squares in 2 ways, for example, as 21167049121 + 99054972900 = 145489^2 + 314730^2 .

It is a cyclic number.

It is not a de Polignac number, because 120222022021 - 2⁹ = 120222021509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120222021986 and 120222022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120222022001) 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, 192047646 + ... + 192048271.

It is an arithmetic number, because the mean of its divisors is an integer number (30151529563).

Almost surely, 2^120222022021 is an apocalyptic number.

It is an amenable number.

120222022021 is a deficient number, since it is larger than the sum of its proper divisors (384096231).

120222022021 is an equidigital number, since it uses as much as digits as its factorization.

120222022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384096230.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 120222022021 its reverse (120220222021), we get a palindrome (240442244042).

The spelling of 120222022021 in words is "one hundred twenty billion, two hundred twenty-two million, twenty-two thousand, twenty-one".