21021220232341 has 8 divisors (see below), whose sum is σ = 24024613270784. Its totient is φ = 18017917588080.

The previous prime is 21021220232189. The next prime is 21021220232359. The reversal of 21021220232341 is 14323202212012.

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 21021220232341 - 2²¹ = 21021218135189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021220232381) 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, 22099485 + ... + 23031058.

It is an arithmetic number, because the mean of its divisors is an integer number (3003076658848).

Almost surely, 2^{21021220232341} is an apocalyptic number.

It is an amenable number.

21021220232341 is a deficient number, since it is larger than the sum of its proper divisors (3003393038443).

21021220232341 is an equidigital number, since it uses as much as digits as its factorization.

21021220232341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45197091.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21021220232341 its reverse (14323202212012), we get a palindrome (35344422444353).

The spelling of 21021220232341 in words is "twenty-one trillion, twenty-one billion, two hundred twenty million, two hundred thirty-two thousand, three hundred forty-one".