21342213024044 has 24 divisors (see below), whose sum is σ = 43140943975248. Its totient is φ = 9130358512640.

The previous prime is 21342213024017. The next prime is 21342213024073. The reversal of 21342213024044 is 44042031224312.

It is a happy number.

It is a super-2 number, since 2×21342213024044² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21342213024044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14266184429 + ... + 14266185924.

It is an arithmetic number, because the mean of its divisors is an integer number (1797539332302).

Almost surely, 2^{21342213024044} is an apocalyptic number.

It is an amenable number.

21342213024044 is an abundant number, since it is smaller than the sum of its proper divisors (21798730951204).

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

21342213024044 is a wasteful number, since it uses less digits than its factorization.

21342213024044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28532370385 (or 28532370383 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 21342213024044 its reverse (44042031224312), we get a palindrome (65384244248356).

The spelling of 21342213024044 in words is "twenty-one trillion, three hundred forty-two billion, two hundred thirteen million, twenty-four thousand, forty-four".