212424402011 has 4 divisors (see below), whose sum is σ = 212714204112. Its totient is φ = 212134599912.

The previous prime is 212424402007. The next prime is 212424402019. The reversal of 212424402011 is 110204424212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212424402011 - 2² = 212424402007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212424402019) 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, 144899951 + ... + 144901416.

It is an arithmetic number, because the mean of its divisors is an integer number (53178551028).

Almost surely, 2^212424402011 is an apocalyptic number.

212424402011 is a deficient number, since it is larger than the sum of its proper divisors (289802101).

212424402011 is an equidigital number, since it uses as much as digits as its factorization.

212424402011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289802100.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 212424402011 its reverse (110204424212), we get a palindrome (322628826223).

The spelling of 212424402011 in words is "two hundred twelve billion, four hundred twenty-four million, four hundred two thousand, eleven".