120212011221 has 24 divisors (see below), whose sum is σ = 169396403904. Its totient is φ = 75818445120.

The previous prime is 120212011177. The next prime is 120212011247. The reversal of 120212011221 is 122110212021.

It is not a de Polignac number, because 120212011221 - 2¹¹ = 120212009173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120212011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212011721) 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 23 ways as a sum of consecutive naturals, for example, 711001 + ... + 863681.

It is an arithmetic number, because the mean of its divisors is an integer number (7058183496).

Almost surely, 2^120212011221 is an apocalyptic number.

It is an amenable number.

120212011221 is a deficient number, since it is larger than the sum of its proper divisors (49184392683).

120212011221 is a wasteful number, since it uses less digits than its factorization.

120212011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153449 (or 153430 counting only the distinct ones).

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

Adding to 120212011221 its reverse (122110212021), we get a palindrome (242322223242).

The spelling of 120212011221 in words is "one hundred twenty billion, two hundred twelve million, eleven thousand, two hundred twenty-one".