21234442204422 has 40 divisors (see below), whose sum is σ = 47619344940816. Its totient is φ = 7072425307728.

The previous prime is 21234442204399. The next prime is 21234442204433. The reversal of 21234442204422 is 22440224443212.

21234442204422 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 4 + 4 + 4 + 220 + 4 + 422 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52781338 + ... + 53182125.

Almost surely, 2^{21234442204422} is an apocalyptic number.

21234442204422 is an abundant number, since it is smaller than the sum of its proper divisors (26384902736394).

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

21234442204422 is a wasteful number, since it uses less digits than its factorization.

21234442204422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105964714 (or 105964705 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 21234442204422 its reverse (22440224443212), we get a palindrome (43674666647634).

The spelling of 21234442204422 in words is "twenty-one trillion, two hundred thirty-four billion, four hundred forty-two million, two hundred four thousand, four hundred twenty-two".