21333250142255 has 8 divisors (see below), whose sum is σ = 25605219106752. Its totient is φ = 17063054156448.

The previous prime is 21333250142219. The next prime is 21333250142261. The reversal of 21333250142255 is 55224105233312.

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 21333250142255 - 2¹² = 21333250138159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 443218199 + ... + 443266328.

It is an arithmetic number, because the mean of its divisors is an integer number (3200652388344).

Almost surely, 2^{21333250142255} is an apocalyptic number.

21333250142255 is a deficient number, since it is larger than the sum of its proper divisors (4271968964497).

21333250142255 is an equidigital number, since it uses as much as digits as its factorization.

21333250142255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886489345.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 21333250142255 its reverse (55224105233312), we get a palindrome (76557355375567).

The spelling of 21333250142255 in words is "twenty-one trillion, three hundred thirty-three billion, two hundred fifty million, one hundred forty-two thousand, two hundred fifty-five".