21216362413001 has 8 divisors (see below), whose sum is σ = 24247669841280. Its totient is φ = 18185154612768.

The previous prime is 21216362412827. The next prime is 21216362413009. The reversal of 21216362413001 is 10031426361212.

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 21216362413001 - 2¹⁸ = 21216362150857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21216362413009) 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, 24450116 + ... + 25302981.

It is an arithmetic number, because the mean of its divisors is an integer number (3030958730160).

Almost surely, 2^{21216362413001} is an apocalyptic number.

It is an amenable number.

21216362413001 is a deficient number, since it is larger than the sum of its proper divisors (3031307428279).

21216362413001 is an equidigital number, since it uses as much as digits as its factorization.

21216362413001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49814023.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 21216362413001 its reverse (10031426361212), we get a palindrome (31247788774213).

The spelling of 21216362413001 in words is "twenty-one trillion, two hundred sixteen billion, three hundred sixty-two million, four hundred thirteen thousand, one".