211330121331023 has 4 divisors (see below), whose sum is σ = 211497976869480. Its totient is φ = 211162265792568.

The previous prime is 211330121331013. The next prime is 211330121331037. The reversal of 211330121331023 is 320133121033112.

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 211330121331023 - 2⁶ = 211330121330959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211330121330983 and 211330121331001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211330121331013) 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, 83927767340 + ... + 83927769857.

It is an arithmetic number, because the mean of its divisors is an integer number (52874494217370).

Almost surely, 2^{211330121331023} is an apocalyptic number.

211330121331023 is a deficient number, since it is larger than the sum of its proper divisors (167855538457).

211330121331023 is a wasteful number, since it uses less digits than its factorization.

211330121331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167855538456.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 211330121331023 its reverse (320133121033112), we get a palindrome (531463242364135).

The spelling of 211330121331023 in words is "two hundred eleven trillion, three hundred thirty billion, one hundred twenty-one million, three hundred thirty-one thousand, twenty-three".