211413223444 has 24 divisors (see below), whose sum is σ = 379040688936. Its totient is φ = 103116480000.

The previous prime is 211413223387. The next prime is 211413223447. The reversal of 211413223444 is 444322314112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44428208400 + 166985015044 = 210780^2 + 408638^2 .

It is a super-2 number, since 2×211413223444² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211413223447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1442344 + ... + 1582144.

It is an arithmetic number, because the mean of its divisors is an integer number (15793362039).

Almost surely, 2^211413223444 is an apocalyptic number.

It is an amenable number.

211413223444 is a deficient number, since it is larger than the sum of its proper divisors (167627465492).

211413223444 is a wasteful number, since it uses less digits than its factorization.

211413223444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149067 (or 149065 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

Adding to 211413223444 its reverse (444322314112), we get a palindrome (655735537556).

The spelling of 211413223444 in words is "two hundred eleven billion, four hundred thirteen million, two hundred twenty-three thousand, four hundred forty-four".