211313131232101 has 4 divisors (see below), whose sum is σ = 214207831660012. Its totient is φ = 208418430804192.

The previous prime is 211313131232087. The next prime is 211313131232107. The reversal of 211313131232101 is 101232131313112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121381119636100 + 89932011596001 = 11017310^2 + 9483249^2 .

It is a cyclic number.

It is not a de Polignac number, because 211313131232101 - 2¹¹ = 211313131230053 is a prime.

It is a super-2 number, since 2×211313131232101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211313131232107) 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, 1447350213846 + ... + 1447350213991.

It is an arithmetic number, because the mean of its divisors is an integer number (53551957915003).

Almost surely, 2^{211313131232101} is an apocalyptic number.

It is an amenable number.

211313131232101 is a deficient number, since it is larger than the sum of its proper divisors (2894700427911).

211313131232101 is an equidigital number, since it uses as much as digits as its factorization.

211313131232101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894700427910.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 211313131232101 its reverse (101232131313112), we get a palindrome (312545262545213).

The spelling of 211313131232101 in words is "two hundred eleven trillion, three hundred thirteen billion, one hundred thirty-one million, two hundred thirty-two thousand, one hundred one".