211300233221 has 16 divisors (see below), whose sum is σ = 269044346880. Its totient is φ = 161146348080.

The previous prime is 211300233191. The next prime is 211300233229. The reversal of 211300233221 is 122332003112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211300233221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211300233193 and 211300233202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211300233229) 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, 29189561 + ... + 29196798.

It is an arithmetic number, because the mean of its divisors is an integer number (16815271680).

Almost surely, 2^211300233221 is an apocalyptic number.

It is an amenable number.

211300233221 is a deficient number, since it is larger than the sum of its proper divisors (57744113659).

211300233221 is a wasteful number, since it uses less digits than its factorization.

211300233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58386424.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 211300233221 its reverse (122332003112), we get a palindrome (333632236333).

The spelling of 211300233221 in words is "two hundred eleven billion, three hundred million, two hundred thirty-three thousand, two hundred twenty-one".