21222044334 has 16 divisors (see below), whose sum is σ = 47160098640. Its totient is φ = 7074014760.

The previous prime is 21222044309. The next prime is 21222044339. The reversal of 21222044334 is 43344022212.

21222044334 is a `hidden beast` number, since 2 + 1 + 2 + 220 + 4 + 433 + 4 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 21222044298 and 21222044307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222044339) 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, 196500357 + ... + 196500464.

It is an arithmetic number, because the mean of its divisors is an integer number (2947506165).

Almost surely, 2^21222044334 is an apocalyptic number.

21222044334 is an abundant number, since it is smaller than the sum of its proper divisors (25938054306).

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

21222044334 is a wasteful number, since it uses less digits than its factorization.

21222044334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393000832 (or 393000826 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 21222044334 its reverse (43344022212), we get a palindrome (64566066546).

The spelling of 21222044334 in words is "twenty-one billion, two hundred twenty-two million, forty-four thousand, three hundred thirty-four".