21214221442344 has 112 divisors (see below), whose sum is σ = 68157390009120. Its totient is φ = 6061206114720.

The previous prime is 21214221442289. The next prime is 21214221442363. The reversal of 21214221442344 is 44324412241212.

21214221442344 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 4 + 221 + 4 + 423 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21214221442299 and 21214221442308.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 259784542 + ... + 259866189.

Almost surely, 2^{21214221442344} is an apocalyptic number.

21214221442344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21214221442344 is an abundant number, since it is smaller than the sum of its proper divisors (46943168566776).

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

21214221442344 is an equidigital number, since it uses as much as digits as its factorization.

21214221442344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519650762 (or 519650743 counting only the distinct ones).

The product of its digits is 98304, while the sum is 36.

Adding to 21214221442344 its reverse (44324412241212), we get a palindrome (65538633683556).

The spelling of 21214221442344 in words is "twenty-one trillion, two hundred fourteen billion, two hundred twenty-one million, four hundred forty-two thousand, three hundred forty-four".