21340302404041 has 4 divisors (see below), whose sum is σ = 22463476214800. Its totient is φ = 20217128593284.

The previous prime is 21340302403997. The next prime is 21340302404053. The reversal of 21340302404041 is 14040420304312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21340302404041 - 2¹⁵ = 21340302371273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21340302404081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561586905351 + ... + 561586905388.

It is an arithmetic number, because the mean of its divisors is an integer number (5615869053700).

Almost surely, 2^{21340302404041} is an apocalyptic number.

It is an amenable number.

21340302404041 is a deficient number, since it is larger than the sum of its proper divisors (1123173810759).

21340302404041 is a wasteful number, since it uses less digits than its factorization.

21340302404041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123173810758.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21340302404041 its reverse (14040420304312), we get a palindrome (35380722708353).

The spelling of 21340302404041 in words is "twenty-one trillion, three hundred forty billion, three hundred two million, four hundred four thousand, forty-one".