21155531034341 has 8 divisors (see below), whose sum is σ = 23198340203904. Its totient is φ = 19132651710720.

The previous prime is 21155531034329. The next prime is 21155531034347. The reversal of 21155531034341 is 14343013555112.

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

It is a cyclic number.

It is not a de Polignac number, because 21155531034341 - 2³⁴ = 21138351165157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21155531034295 and 21155531034304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21155531034347) 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, 4982459261 + ... + 4982463506.

It is an arithmetic number, because the mean of its divisors is an integer number (2899792525488).

Almost surely, 2^{21155531034341} is an apocalyptic number.

It is an amenable number.

21155531034341 is a deficient number, since it is larger than the sum of its proper divisors (2042809169563).

21155531034341 is a wasteful number, since it uses less digits than its factorization.

21155531034341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9964922971.

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 21155531034341 its reverse (14343013555112), we get a palindrome (35498544589453).

The spelling of 21155531034341 in words is "twenty-one trillion, one hundred fifty-five billion, five hundred thirty-one million, thirty-four thousand, three hundred forty-one".