21533341054401 has 20 divisors (see below), whose sum is σ = 35091370608624. Its totient is φ = 13050509729400.

The previous prime is 21533341054369. The next prime is 21533341054429. The reversal of 21533341054401 is 10445014333512.

21533341054401 is a `hidden beast` number, since 2 + 1 + 533 + 34 + 1 + 0 + 54 + 40 + 1 = 666.

It is not a de Polignac number, because 21533341054401 - 2⁵ = 21533341054369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21533341054441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12083804415 + ... + 12083806196.

Almost surely, 2^{21533341054401} is an apocalyptic number.

It is an amenable number.

21533341054401 is a deficient number, since it is larger than the sum of its proper divisors (13558029554223).

21533341054401 is a wasteful number, since it uses less digits than its factorization.

21533341054401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24167610634 (or 24167610625 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 21533341054401 its reverse (10445014333512), we get a palindrome (31978355387913).

The spelling of 21533341054401 in words is "twenty-one trillion, five hundred thirty-three billion, three hundred forty-one million, fifty-four thousand, four hundred one".