120212101221 has 4 divisors (see below), whose sum is σ = 160282801632. Its totient is φ = 80141400812.

The previous prime is 120212101181. The next prime is 120212101291. The reversal of 120212101221 is 122101212021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122101212021 = 3 ⋅40700404007.

It is a cyclic number.

It is not a de Polignac number, because 120212101221 - 2⁶ = 120212101157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120212101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212101291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20035350201 + ... + 20035350206.

It is an arithmetic number, because the mean of its divisors is an integer number (40070700408).

Almost surely, 2^120212101221 is an apocalyptic number.

It is an amenable number.

120212101221 is a deficient number, since it is larger than the sum of its proper divisors (40070700411).

120212101221 is an equidigital number, since it uses as much as digits as its factorization.

120212101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40070700410.

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

Adding to 120212101221 its reverse (122101212021), we get a palindrome (242313313242).

The spelling of 120212101221 in words is "one hundred twenty billion, two hundred twelve million, one hundred one thousand, two hundred twenty-one".