120012020122221 has 12 divisors (see below), whose sum is σ = 177039008407872. Its totient is φ = 78305715256776.

The previous prime is 120012020122153. The next prime is 120012020122237. The reversal of 120012020122221 is 122221020210021.

It is a happy number.

120012020122221 is a `hidden beast` number, since 1 + 200 + 1 + 20 + 201 + 22 + 221 = 666.

It is not a de Polignac number, because 120012020122221 - 2³¹ = 120009872638573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120012020122194 and 120012020122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012020122921) 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 11 ways as a sum of consecutive naturals, for example, 141858179391 + ... + 141858180236.

It is an arithmetic number, because the mean of its divisors is an integer number (14753250700656).

Almost surely, 2^{120012020122221} is an apocalyptic number.

It is an amenable number.

120012020122221 is a deficient number, since it is larger than the sum of its proper divisors (57026988285651).

120012020122221 is a wasteful number, since it uses less digits than its factorization.

120012020122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283716359680 (or 283716359677 counting only the distinct ones).

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

Adding to 120012020122221 its reverse (122221020210021), we get a palindrome (242233040332242).

The spelling of 120012020122221 in words is "one hundred twenty trillion, twelve billion, twenty million, one hundred twenty-two thousand, two hundred twenty-one".