212211240444 has 96 divisors (see below), whose sum is σ = 628878297600. Its totient is φ = 60621730560.

The previous prime is 212211240443. The next prime is 212211240463. The reversal of 212211240444 is 444042112212.

212211240444 is a `hidden beast` number, since 2 + 1 + 2 + 211 + 2 + 4 + 0 + 444 = 666.

It is a super-2 number, since 2×212211240444² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211240443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5363767 + ... + 5403185.

It is an arithmetic number, because the mean of its divisors is an integer number (6550815600).

Almost surely, 2^212211240444 is an apocalyptic number.

It is an amenable number.

212211240444 is an abundant number, since it is smaller than the sum of its proper divisors (416667057156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212211240444 is a wasteful number, since it uses less digits than its factorization.

212211240444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46560 (or 46552 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 212211240444 its reverse (444042112212), we get a palindrome (656253352656).

The spelling of 212211240444 in words is "two hundred twelve billion, two hundred eleven million, two hundred forty thousand, four hundred forty-four".