21352515102041 has 8 divisors (see below), whose sum is σ = 21759819038400. Its totient is φ = 20947058349840.

The previous prime is 21352515102031. The next prime is 21352515102053. The reversal of 21352515102041 is 14020151525312.

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 21352515102041 - 2²² = 21352510907737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21352515101989 and 21352515102007.

It is not an unprimeable number, because it can be changed into a prime (21352515102031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461772701 + ... + 461818938.

It is an arithmetic number, because the mean of its divisors is an integer number (2719977379800).

Almost surely, 2^{21352515102041} is an apocalyptic number.

It is an amenable number.

21352515102041 is a deficient number, since it is larger than the sum of its proper divisors (407303936359).

21352515102041 is an equidigital number, since it uses as much as digits as its factorization.

21352515102041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923592079.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 21352515102041 its reverse (14020151525312), we get a palindrome (35372666627353).

The spelling of 21352515102041 in words is "twenty-one trillion, three hundred fifty-two billion, five hundred fifteen million, one hundred two thousand, forty-one".