21421132004041 has 16 divisors (see below), whose sum is σ = 28277857987200. Its totient is φ = 15709921102080.

The previous prime is 21421132004029. The next prime is 21421132004071. The reversal of 21421132004041 is 14040023112412.

It is a cyclic number.

It is not a de Polignac number, because 21421132004041 - 2¹³ = 21421131995849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21421132003997 and 21421132004015.

It is not an unprimeable number, because it can be changed into a prime (21421132004071) 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, 8182249266 + ... + 8182251883.

It is an arithmetic number, because the mean of its divisors is an integer number (1767366124200).

Almost surely, 2^{21421132004041} is an apocalyptic number.

It is an amenable number.

21421132004041 is a deficient number, since it is larger than the sum of its proper divisors (6856725983159).

21421132004041 is a wasteful number, since it uses less digits than its factorization.

21421132004041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16364501184.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21421132004041 its reverse (14040023112412), we get a palindrome (35461155116453).

The spelling of 21421132004041 in words is "twenty-one trillion, four hundred twenty-one billion, one hundred thirty-two million, four thousand, forty-one".