211420201243 has 16 divisors (see below), whose sum is σ = 220611948480. Its totient is φ = 202361798016.

The previous prime is 211420201229. The next prime is 211420201261. The reversal of 211420201243 is 342102024112.

It is a cyclic number.

It is not a de Polignac number, because 211420201243 - 2⁵ = 211420201211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211420201273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1747921 + ... + 1864957.

It is an arithmetic number, because the mean of its divisors is an integer number (13788246780).

Almost surely, 2^211420201243 is an apocalyptic number.

211420201243 is a deficient number, since it is larger than the sum of its proper divisors (9191747237).

211420201243 is a wasteful number, since it uses less digits than its factorization.

211420201243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117606.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 211420201243 its reverse (342102024112), we get a palindrome (553522225355).

The spelling of 211420201243 in words is "two hundred eleven billion, four hundred twenty million, two hundred one thousand, two hundred forty-three".