120211201221 has 16 divisors (see below), whose sum is σ = 160650040320. Its totient is φ = 79956779760.

The previous prime is 120211201207. The next prime is 120211201307. The reversal of 120211201221 is 122102112021.

It is not a de Polignac number, because 120211201221 - 2¹⁸ = 120210939077 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120211201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211201021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2498490 + ... + 2546148.

It is an arithmetic number, because the mean of its divisors is an integer number (10040627520).

Almost surely, 2^120211201221 is an apocalyptic number.

It is an amenable number.

120211201221 is a deficient number, since it is larger than the sum of its proper divisors (40438839099).

120211201221 is a wasteful number, since it uses less digits than its factorization.

120211201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49576.

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

Adding to 120211201221 its reverse (122102112021), we get a palindrome (242313313242).

The spelling of 120211201221 in words is "one hundred twenty billion, two hundred eleven million, two hundred one thousand, two hundred twenty-one".