20442221134434 has 24 divisors (see below), whose sum is σ = 48317977227312. Its totient is φ = 6194612464920.

The previous prime is 20442221134411. The next prime is 20442221134469. The reversal of 20442221134434 is 43443112224402.

20442221134434 is a `hidden beast` number, since 2 + 0 + 4 + 4 + 2 + 2 + 211 + 3 + 4 + 434 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51621770344 + ... + 51621770739.

It is an arithmetic number, because the mean of its divisors is an integer number (2013249051138).

Almost surely, 2^{20442221134434} is an apocalyptic number.

20442221134434 is an abundant number, since it is smaller than the sum of its proper divisors (27875756092878).

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

20442221134434 is a wasteful number, since it uses less digits than its factorization.

20442221134434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103243541102 (or 103243541099 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

Adding to 20442221134434 its reverse (43443112224402), we get a palindrome (63885333358836).

The spelling of 20442221134434 in words is "twenty trillion, four hundred forty-two billion, two hundred twenty-one million, one hundred thirty-four thousand, four hundred thirty-four".