211320121011 has 8 divisors (see below), whose sum is σ = 281764116480. Its totient is φ = 140878103112.

The previous prime is 211320121009. The next prime is 211320121021. The reversal of 211320121011 is 110121023112.

211320121011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211320121011 - 2¹ = 211320121009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211320121021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223915 + ... + 687588.

It is an arithmetic number, because the mean of its divisors is an integer number (35220514560).

Almost surely, 2^211320121011 is an apocalyptic number.

211320121011 is a deficient number, since it is larger than the sum of its proper divisors (70443995469).

211320121011 is an equidigital number, since it uses as much as digits as its factorization.

211320121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988785.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 211320121011 its reverse (110121023112), we get a palindrome (321441144123).

The spelling of 211320121011 in words is "two hundred eleven billion, three hundred twenty million, one hundred twenty-one thousand, eleven".