21444102234434 has 32 divisors (see below), whose sum is σ = 35356465849536. Its totient is φ = 9673438072320.

The previous prime is 21444102234431. The next prime is 21444102234473. The reversal of 21444102234434 is 43443220144412.

It is not an unprimeable number, because it can be changed into a prime (21444102234431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9687722 + ... + 11693594.

It is an arithmetic number, because the mean of its divisors is an integer number (1104889557798).

Almost surely, 2^{21444102234434} is an apocalyptic number.

21444102234434 is a deficient number, since it is larger than the sum of its proper divisors (13912363615102).

21444102234434 is a wasteful number, since it uses less digits than its factorization.

21444102234434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009570.

The product of its (nonzero) digits is 294912, while the sum is 38.

Adding to 21444102234434 its reverse (43443220144412), we get a palindrome (64887322378846).

The spelling of 21444102234434 in words is "twenty-one trillion, four hundred forty-four billion, one hundred two million, two hundred thirty-four thousand, four hundred thirty-four".