120212112221 has 4 divisors (see below), whose sum is σ = 124357357500. Its totient is φ = 116066866944.

The previous prime is 120212112203. The next prime is 120212112247. The reversal of 120212112221 is 122211212021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64510920100 + 55701192121 = 253990^2 + 236011^2 .

It is a cyclic number.

It is not a de Polignac number, because 120212112221 - 2⁶ = 120212112157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120212112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212112281) 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 3 ways as a sum of consecutive naturals, for example, 2072622596 + ... + 2072622653.

It is an arithmetic number, because the mean of its divisors is an integer number (31089339375).

Almost surely, 2^120212112221 is an apocalyptic number.

It is an amenable number.

120212112221 is a deficient number, since it is larger than the sum of its proper divisors (4145245279).

120212112221 is an equidigital number, since it uses as much as digits as its factorization.

120212112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145245278.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120212112221 its reverse (122211212021), we get a palindrome (242423324242).

The spelling of 120212112221 in words is "one hundred twenty billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty-one".