120221122221 has 12 divisors (see below), whose sum is σ = 173763571072. Its totient is φ = 80096258376.

The previous prime is 120221122207. The next prime is 120221122309. The reversal of 120221122221 is 122221122021.

It is a happy number.

It is not a de Polignac number, because 120221122221 - 2⁷ = 120221122093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120221122194 and 120221122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221122421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4248151 + ... + 4276356.

Almost surely, 2^120221122221 is an apocalyptic number.

It is an amenable number.

120221122221 is a deficient number, since it is larger than the sum of its proper divisors (53542448851).

120221122221 is a wasteful number, since it uses less digits than its factorization.

120221122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8526080 (or 8526077 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 120221122221 its reverse (122221122021), we get a palindrome (242442244242).

The spelling of 120221122221 in words is "one hundred twenty billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-one".