21442011321042 has 32 divisors (see below), whose sum is σ = 51314215128960. Its totient is φ = 6597541944720.

The previous prime is 21442011321001. The next prime is 21442011321061. The reversal of 21442011321042 is 24012311024412.

21442011321042 is a `hidden beast` number, since 2 + 1 + 4 + 420 + 1 + 132 + 104 + 2 = 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 = 21442011320997 and 21442011321015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15272087134 + ... + 15272088537.

It is an arithmetic number, because the mean of its divisors is an integer number (1603569222780).

Almost surely, 2^{21442011321042} is an apocalyptic number.

21442011321042 is an abundant number, since it is smaller than the sum of its proper divisors (29872203807918).

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

21442011321042 is a wasteful number, since it uses less digits than its factorization.

21442011321042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30544175695 (or 30544175689 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 21442011321042 its reverse (24012311024412), we get a palindrome (45454322345454).

The spelling of 21442011321042 in words is "twenty-one trillion, four hundred forty-two billion, eleven million, three hundred twenty-one thousand, forty-two".