211311301013121 has 4 divisors (see below), whose sum is σ = 281748401350832. Its totient is φ = 140874200675412.

The previous prime is 211311301013119. The next prime is 211311301013123. The reversal of 211311301013121 is 121310103113112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (211311301013119) and next prime (211311301013123).

It is not a de Polignac number, because 211311301013121 - 2¹ = 211311301013119 is a prime.

It is a super-2 number, since 2×211311301013121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211311301013123) 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, 35218550168851 + ... + 35218550168856.

It is an arithmetic number, because the mean of its divisors is an integer number (70437100337708).

Almost surely, 2^{211311301013121} is an apocalyptic number.

It is an amenable number.

211311301013121 is a deficient number, since it is larger than the sum of its proper divisors (70437100337711).

211311301013121 is an equidigital number, since it uses as much as digits as its factorization.

211311301013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70437100337710.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 211311301013121 its reverse (121310103113112), we get a palindrome (332621404126233).

The spelling of 211311301013121 in words is "two hundred eleven trillion, three hundred eleven billion, three hundred one million, thirteen thousand, one hundred twenty-one".