120211221211 has 4 divisors (see below), whose sum is σ = 121401431424. Its totient is φ = 119021011000.

The previous prime is 120211221187. The next prime is 120211221233. The reversal of 120211221211 is 112122112021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120211221211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120211221511) 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, 595104955 + ... + 595105156.

It is an arithmetic number, because the mean of its divisors is an integer number (30350357856).

Almost surely, 2^120211221211 is an apocalyptic number.

120211221211 is a deficient number, since it is larger than the sum of its proper divisors (1190210213).

120211221211 is a wasteful number, since it uses less digits than its factorization.

120211221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190210212.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120211221211 its reverse (112122112021), we get a palindrome (232333333232).

The spelling of 120211221211 in words is "one hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, two hundred eleven".