120210221211221 has 32 divisors (see below), whose sum is σ = 134900244720000. Its totient is φ = 106448715896832.

The previous prime is 120210221211173. The next prime is 120210221211229. The reversal of 120210221211221 is 122112122012021.

It is a cyclic number.

It is not a de Polignac number, because 120210221211221 - 2¹⁰ = 120210221210197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120210221211193 and 120210221211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120210221211229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320290145 + ... + 320665241.

It is an arithmetic number, because the mean of its divisors is an integer number (4215632647500).

Almost surely, 2^{120210221211221} is an apocalyptic number.

It is an amenable number.

120210221211221 is a deficient number, since it is larger than the sum of its proper divisors (14690023508779).

120210221211221 is a wasteful number, since it uses less digits than its factorization.

120210221211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381941.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 120210221211221 its reverse (122112122012021), we get a palindrome (242322343223242).

The spelling of 120210221211221 in words is "one hundred twenty trillion, two hundred ten billion, two hundred twenty-one million, two hundred eleven thousand, two hundred twenty-one".