120221221211211 has 4 divisors (see below), whose sum is σ = 160294961614952. Its totient is φ = 80147480807472.

The previous prime is 120221221211159. The next prime is 120221221211279. The reversal of 120221221211211 is 112112122122021.

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

It is not a de Polignac number, because 120221221211211 - 2¹⁴ = 120221221194827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120221221215211) 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, 20036870201866 + ... + 20036870201871.

It is an arithmetic number, because the mean of its divisors is an integer number (40073740403738).

Almost surely, 2^{120221221211211} is an apocalyptic number.

120221221211211 is a deficient number, since it is larger than the sum of its proper divisors (40073740403741).

120221221211211 is an equidigital number, since it uses as much as digits as its factorization.

120221221211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40073740403740.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 120221221211211 its reverse (112112122122021), we get a palindrome (232333343333232).

The spelling of 120221221211211 in words is "one hundred twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, two hundred eleven".