211043124406 has 4 divisors (see below), whose sum is σ = 316564686612. Its totient is φ = 105521562202.

The previous prime is 211043124389. The next prime is 211043124407. The reversal of 211043124406 is 604421340112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211043124407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52760781100 + ... + 52760781103.

It is an arithmetic number, because the mean of its divisors is an integer number (79141171653).

Almost surely, 2^211043124406 is an apocalyptic number.

211043124406 is a deficient number, since it is larger than the sum of its proper divisors (105521562206).

211043124406 is a wasteful number, since it uses less digits than its factorization.

211043124406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105521562205.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 211043124406 its reverse (604421340112), we get a palindrome (815464464518).

The spelling of 211043124406 in words is "two hundred eleven billion, forty-three million, one hundred twenty-four thousand, four hundred six".