212244312011 has 4 divisors (see below), whose sum is σ = 215723727024. Its totient is φ = 208764897000.

The previous prime is 212244311999. The next prime is 212244312029. The reversal of 212244312011 is 110213442212.

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 212244312011 - 2⁶ = 212244311947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212244312211) 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, 1739707415 + ... + 1739707536.

It is an arithmetic number, because the mean of its divisors is an integer number (53930931756).

Almost surely, 2^212244312011 is an apocalyptic number.

212244312011 is a deficient number, since it is larger than the sum of its proper divisors (3479415013).

212244312011 is an equidigital number, since it uses as much as digits as its factorization.

212244312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479415012.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 212244312011 its reverse (110213442212), we get a palindrome (322457754223).

The spelling of 212244312011 in words is "two hundred twelve billion, two hundred forty-four million, three hundred twelve thousand, eleven".