120022121221 has 4 divisors (see below), whose sum is σ = 120026207392. Its totient is φ = 120018035052.

The previous prime is 120022121213. The next prime is 120022121257. The reversal of 120022121221 is 122121220021.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122121220021 = 419 ⋅291458759.

It is a cyclic number.

It is not a de Polignac number, because 120022121221 - 2³ = 120022121213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120022121195 and 120022121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120022121521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1998705 + ... + 2057878.

It is an arithmetic number, because the mean of its divisors is an integer number (30006551848).

Almost surely, 2^120022121221 is an apocalyptic number.

It is an amenable number.

120022121221 is a deficient number, since it is larger than the sum of its proper divisors (4086171).

120022121221 is an equidigital number, since it uses as much as digits as its factorization.

120022121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086170.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120022121221 its reverse (122121220021), we get a palindrome (242143341242).

The spelling of 120022121221 in words is "one hundred twenty billion, twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".