211420233243 has 64 divisors (see below), whose sum is σ = 335817395200. Its totient is φ = 131060436480.

The previous prime is 211420233179. The next prime is 211420233251. The reversal of 211420233243 is 342332024112.

211420233243 is a `hidden beast` number, since 2 + 1 + 1 + 420 + 233 + 2 + 4 + 3 = 666.

211420233243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211420233243 - 2⁶ = 211420233179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (211420233263) 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 63 ways as a sum of consecutive naturals, for example, 15232755 + ... + 15246627.

It is an arithmetic number, because the mean of its divisors is an integer number (5247146800).

Almost surely, 2^211420233243 is an apocalyptic number.

211420233243 is a deficient number, since it is larger than the sum of its proper divisors (124397161957).

211420233243 is a wasteful number, since it uses less digits than its factorization.

211420233243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14449 (or 14443 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 211420233243 its reverse (342332024112), we get a palindrome (553752257355).

The spelling of 211420233243 in words is "two hundred eleven billion, four hundred twenty million, two hundred thirty-three thousand, two hundred forty-three".