120121020211 has 4 divisors (see below), whose sum is σ = 120138082632. Its totient is φ = 120103957792.

The previous prime is 120121020169. The next prime is 120121020241. The reversal of 120121020211 is 112020121021.

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 120121020211 - 2⁹ = 120121019699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120121020191 and 120121020200.

It is not an unprimeable number, because it can be changed into a prime (120121020241) 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, 8520646 + ... + 8534731.

It is an arithmetic number, because the mean of its divisors is an integer number (30034520658).

Almost surely, 2^120121020211 is an apocalyptic number.

120121020211 is a deficient number, since it is larger than the sum of its proper divisors (17062421).

120121020211 is an equidigital number, since it uses as much as digits as its factorization.

120121020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17062420.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120121020211 its reverse (112020121021), we get a palindrome (232141141232).

The spelling of 120121020211 in words is "one hundred twenty billion, one hundred twenty-one million, twenty thousand, two hundred eleven".