21213363055641 has 8 divisors (see below), whose sum is σ = 28286441671200. Its totient is φ = 14141263238592.

The previous prime is 21213363055603. The next prime is 21213363055691. The reversal of 21213363055641 is 14655036331212.

It is a happy number.

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

It is not a de Polignac number, because 21213363055641 - 2⁷ = 21213363055513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21213363055593 and 21213363055602.

It is not an unprimeable number, because it can be changed into a prime (21213363055601) 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, 244649055 + ... + 244735748.

It is an arithmetic number, because the mean of its divisors is an integer number (3535805208900).

Almost surely, 2^{21213363055641} is an apocalyptic number.

It is an amenable number.

21213363055641 is a deficient number, since it is larger than the sum of its proper divisors (7073078615559).

21213363055641 is a wasteful number, since it uses less digits than its factorization.

21213363055641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489399255.

The product of its (nonzero) digits is 388800, while the sum is 42.

Adding to 21213363055641 its reverse (14655036331212), we get a palindrome (35868399386853).

The spelling of 21213363055641 in words is "twenty-one trillion, two hundred thirteen billion, three hundred sixty-three million, fifty-five thousand, six hundred forty-one".