212440344011 has 16 divisors (see below), whose sum is σ = 246086308608. Its totient is φ = 179625362400.

The previous prime is 212440344007. The next prime is 212440344037. The reversal of 212440344011 is 110443044212.

It is a cyclic number.

It is not a de Polignac number, because 212440344011 - 2² = 212440344007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212440344071) 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, 107456 + ... + 660626.

It is an arithmetic number, because the mean of its divisors is an integer number (15380394288).

Almost surely, 2^212440344011 is an apocalyptic number.

212440344011 is a deficient number, since it is larger than the sum of its proper divisors (33645964597).

212440344011 is an equidigital number, since it uses as much as digits as its factorization.

212440344011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553922.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 212440344011 its reverse (110443044212), we get a palindrome (322883388223).

The spelling of 212440344011 in words is "two hundred twelve billion, four hundred forty million, three hundred forty-four thousand, eleven".