211133002221 has 8 divisors (see below), whose sum is σ = 312789632960. Its totient is φ = 140755334796.

The previous prime is 211133002159. The next prime is 211133002259. The reversal of 211133002221 is 122200331112.

211133002221 is a `hidden beast` number, since 2 + 111 + 330 + 0 + 2 + 221 = 666.

It is not a de Polignac number, because 211133002221 - 2¹⁰ = 211133001197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211133002194 and 211133002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211133002291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3909870385 + ... + 3909870438.

It is an arithmetic number, because the mean of its divisors is an integer number (39098704120).

Almost surely, 2^211133002221 is an apocalyptic number.

It is an amenable number.

211133002221 is a deficient number, since it is larger than the sum of its proper divisors (101656630739).

211133002221 is an equidigital number, since it uses as much as digits as its factorization.

211133002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7819740832 (or 7819740826 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 211133002221 its reverse (122200331112), we get a palindrome (333333333333).

The spelling of 211133002221 in words is "two hundred eleven billion, one hundred thirty-three million, two thousand, two hundred twenty-one".