21442113304131 has 32 divisors (see below), whose sum is σ = 30895147422720. Its totient is φ = 13149565156224.

The previous prime is 21442113304121. The next prime is 21442113304141. The reversal of 21442113304131 is 13140331124412.

It is an interprime number because it is at equal distance from previous prime (21442113304121) and next prime (21442113304141).

It is not a de Polignac number, because 21442113304131 - 2²¹ = 21442111206979 is a prime.

It is a super-3 number, since 3×21442113304131³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (21442113304121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20390610 + ... + 21416376.

It is an arithmetic number, because the mean of its divisors is an integer number (965473356960).

Almost surely, 2^{21442113304131} is an apocalyptic number.

21442113304131 is a deficient number, since it is larger than the sum of its proper divisors (9453034118589).

21442113304131 is a wasteful number, since it uses less digits than its factorization.

21442113304131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027635.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 21442113304131 its reverse (13140331124412), we get a palindrome (34582444428543).

The spelling of 21442113304131 in words is "twenty-one trillion, four hundred forty-two billion, one hundred thirteen million, three hundred four thousand, one hundred thirty-one".