120331221211 has 4 divisors (see below), whose sum is σ = 126664443400. Its totient is φ = 113997999024.

The previous prime is 120331221209. The next prime is 120331221233. The reversal of 120331221211 is 112122133021.

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

It is a cyclic number.

It is not a de Polignac number, because 120331221211 - 2¹ = 120331221209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 6333222169 = 120331221211 / (1 + 2 + 0 + 3 + 3 + 1 + 2 + 2 + 1 + 2 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120331225211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3166611066 + ... + 3166611103.

It is an arithmetic number, because the mean of its divisors is an integer number (31666110850).

Almost surely, 2^120331221211 is an apocalyptic number.

120331221211 is a deficient number, since it is larger than the sum of its proper divisors (6333222189).

120331221211 is an equidigital number, since it uses as much as digits as its factorization.

120331221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6333222188.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 120331221211 its reverse (112122133021), we get a palindrome (232453354232).

The spelling of 120331221211 in words is "one hundred twenty billion, three hundred thirty-one million, two hundred twenty-one thousand, two hundred eleven".