211211203230523 has 4 divisors (see below), whose sum is σ = 211212182395368. Its totient is φ = 211210224065680.

The previous prime is 211211203230481. The next prime is 211211203230529. The reversal of 211211203230523 is 325032302112112.

211211203230523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211211203230523 is a prime.

It is a super-2 number, since 2×211211203230523² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211211203230491 and 211211203230500.

It is not an unprimeable number, because it can be changed into a prime (211211203230529) 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, 489258793 + ... + 489690298.

It is an arithmetic number, because the mean of its divisors is an integer number (52803045598842).

Almost surely, 2^{211211203230523} is an apocalyptic number.

211211203230523 is a deficient number, since it is larger than the sum of its proper divisors (979164845).

211211203230523 is an equidigital number, since it uses as much as digits as its factorization.

211211203230523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979164844.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 211211203230523 its reverse (325032302112112), we get a palindrome (536243505342635).

The spelling of 211211203230523 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred three million, two hundred thirty thousand, five hundred twenty-three".