212212444311 has 24 divisors (see below), whose sum is σ = 350333496864. Its totient is φ = 121259220480.

The previous prime is 212212444307. The next prime is 212212444363. The reversal of 212212444311 is 113444212212.

212212444311 is a `hidden beast` number, since 2 + 1 + 2 + 212 + 4 + 443 + 1 + 1 = 666.

It is not a de Polignac number, because 212212444311 - 2² = 212212444307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212446311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1894591 + ... + 2003471.

It is an arithmetic number, because the mean of its divisors is an integer number (14597229036).

Almost surely, 2^212212444311 is an apocalyptic number.

212212444311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212212444311 is a deficient number, since it is larger than the sum of its proper divisors (138121052553).

212212444311 is a wasteful number, since it uses less digits than its factorization.

212212444311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139831 (or 139828 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 212212444311 its reverse (113444212212), we get a palindrome (325656656523).

The spelling of 212212444311 in words is "two hundred twelve billion, two hundred twelve million, four hundred forty-four thousand, three hundred eleven".