211330212133 has 4 divisors (see below), whose sum is σ = 223761401100. Its totient is φ = 198899023168.

The previous prime is 211330212113. The next prime is 211330212187. The reversal of 211330212133 is 331212033112.

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 160397847009 + 50932365124 = 400497^2 + 225682^2 .

It is a cyclic number.

It is not a de Polignac number, because 211330212133 - 2²⁹ = 210793341221 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 (211330212103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6215594458 + ... + 6215594491.

It is an arithmetic number, because the mean of its divisors is an integer number (55940350275).

Almost surely, 2^211330212133 is an apocalyptic number.

It is an amenable number.

211330212133 is a deficient number, since it is larger than the sum of its proper divisors (12431188967).

211330212133 is a wasteful number, since it uses less digits than its factorization.

211330212133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12431188966.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 211330212133 its reverse (331212033112), we get a palindrome (542542245245).

The spelling of 211330212133 in words is "two hundred eleven billion, three hundred thirty million, two hundred twelve thousand, one hundred thirty-three".