21226344362212 has 18 divisors (see below), whose sum is σ = 40830013639814. Its totient is φ = 9648338346240.

The previous prime is 21226344362207. The next prime is 21226344362219.

21226344362212 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 16160351760036 + 5065992602176 = 4019994^2 + 2250776^2 .

It is not an unprimeable number, because it can be changed into a prime (21226344362219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21928041213 + ... + 21928042180.

Almost surely, 2^{21226344362212} is an apocalyptic number.

21226344362212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21226344362212 is a deficient number, since it is larger than the sum of its proper divisors (19603669277602).

21226344362212 is a wasteful number, since it uses less digits than its factorization.

21226344362212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43856083419 (or 43856083406 counting only the distinct ones).

The product of its digits is 331776, while the sum is 40.

It can be divided in two parts, 2122634 and 4362212, that added together give a palindrome (6484846).

The spelling of 21226344362212 in words is "twenty-one trillion, two hundred twenty-six billion, three hundred forty-four million, three hundred sixty-two thousand, two hundred twelve".