21442030112442 has 16 divisors (see below), whose sum is σ = 42886464658272. Its totient is φ = 7146942631920.

The previous prime is 21442030112429. The next prime is 21442030112443. The reversal of 21442030112442 is 24421103024412.

It is not an unprimeable number, because it can be changed into a prime (21442030112443) 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, 100068784 + ... + 100282827.

It is an arithmetic number, because the mean of its divisors is an integer number (2680404041142).

Almost surely, 2^{21442030112442} is an apocalyptic number.

21442030112442 is an abundant number, since it is smaller than the sum of its proper divisors (21444434545830).

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

21442030112442 is a wasteful number, since it uses less digits than its factorization.

21442030112442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200369453.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 21442030112442 its reverse (24421103024412), we get a palindrome (45863133136854).

The spelling of 21442030112442 in words is "twenty-one trillion, four hundred forty-two billion, thirty million, one hundred twelve thousand, four hundred forty-two".