211233355453 has 4 divisors (see below), whose sum is σ = 212400390748. Its totient is φ = 210066320160.

The previous prime is 211233355441. The next prime is 211233355481. The reversal of 211233355453 is 354553332112.

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 69041766564 + 142191588889 = 262758^2 + 377083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211233355453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211233355153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583517376 + ... + 583517737.

It is an arithmetic number, because the mean of its divisors is an integer number (53100097687).

Almost surely, 2^211233355453 is an apocalyptic number.

It is an amenable number.

211233355453 is a deficient number, since it is larger than the sum of its proper divisors (1167035295).

211233355453 is a wasteful number, since it uses less digits than its factorization.

211233355453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167035294.

The product of its digits is 162000, while the sum is 37.

Adding to 211233355453 its reverse (354553332112), we get a palindrome (565786687565).

The spelling of 211233355453 in words is "two hundred eleven billion, two hundred thirty-three million, three hundred fifty-five thousand, four hundred fifty-three".