212021122233 has 4 divisors (see below), whose sum is σ = 282694829648. Its totient is φ = 141347414820.

The previous prime is 212021122177. The next prime is 212021122259. The reversal of 212021122233 is 332221120212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 212021122233 - 2²¹ = 212019025081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021127233) 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, 35336853703 + ... + 35336853708.

It is an arithmetic number, because the mean of its divisors is an integer number (70673707412).

Almost surely, 2^212021122233 is an apocalyptic number.

It is an amenable number.

212021122233 is a deficient number, since it is larger than the sum of its proper divisors (70673707415).

212021122233 is an equidigital number, since it uses as much as digits as its factorization.

212021122233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70673707414.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 212021122233 its reverse (332221120212), we get a palindrome (544242242445).

The spelling of 212021122233 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-two thousand, two hundred thirty-three".