120101221221 has 32 divisors (see below), whose sum is σ = 170061189120. Its totient is φ = 75229877184.

The previous prime is 120101221211. The next prime is 120101221241. The reversal of 120101221221 is 122122101021.

It is not a de Polignac number, because 120101221221 - 2³⁰ = 119027479397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120101221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120101221211) 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 31 ways as a sum of consecutive naturals, for example, 5578740 + ... + 5600226.

It is an arithmetic number, because the mean of its divisors is an integer number (5314412160).

Almost surely, 2^120101221221 is an apocalyptic number.

It is an amenable number.

120101221221 is a deficient number, since it is larger than the sum of its proper divisors (49959967899).

120101221221 is a wasteful number, since it uses less digits than its factorization.

120101221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22945.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120101221221 its reverse (122122101021), we get a palindrome (242223322242).

The spelling of 120101221221 in words is "one hundred twenty billion, one hundred one million, two hundred twenty-one thousand, two hundred twenty-one".