21423013422441 has 8 divisors (see below), whose sum is σ = 29485437828864. Its totient is φ = 13821298982160.

The previous prime is 21423013422413. The next prime is 21423013422451. The reversal of 21423013422441 is 14422431032412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21423013422441 - 2⁴¹ = 19223990166889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21423013422451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115177491426 + ... + 115177491611.

It is an arithmetic number, because the mean of its divisors is an integer number (3685679728608).

Almost surely, 2^{21423013422441} is an apocalyptic number.

It is an amenable number.

21423013422441 is a deficient number, since it is larger than the sum of its proper divisors (8062424406423).

21423013422441 is a wasteful number, since it uses less digits than its factorization.

21423013422441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230354983071.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 21423013422441 its reverse (14422431032412), we get a palindrome (35845444454853).

The spelling of 21423013422441 in words is "twenty-one trillion, four hundred twenty-three billion, thirteen million, four hundred twenty-two thousand, four hundred forty-one".