120221220122221 has 16 divisors (see below), whose sum is σ = 122118097808448. Its totient is φ = 118339930800000.

The previous prime is 120221220122197. The next prime is 120221220122261. The reversal of 120221220122221 is 122221022122021.

It is a cyclic number.

It is not a de Polignac number, because 120221220122221 - 2⁷ = 120221220122093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120221220122192 and 120221220122201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221220122261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9532201 + ... + 18201793.

It is an arithmetic number, because the mean of its divisors is an integer number (7632381113028).

Almost surely, 2^{120221220122221} is an apocalyptic number.

It is an amenable number.

120221220122221 is a deficient number, since it is larger than the sum of its proper divisors (1896877686227).

120221220122221 is a wasteful number, since it uses less digits than its factorization.

120221220122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8670492.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 120221220122221 its reverse (122221022122021), we get a palindrome (242442242244242).

The spelling of 120221220122221 in words is "one hundred twenty trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty-one".