21224522542211 has 8 divisors (see below), whose sum is σ = 21281606799024. Its totient is φ = 21167439259680.

The previous prime is 21224522542129. The next prime is 21224522542243. The reversal of 21224522542211 is 11224522542212.

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 21224522542211 - 2³⁸ = 20949644635267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21224522542261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72617876 + ... + 72909566.

It is an arithmetic number, because the mean of its divisors is an integer number (2660200849878).

Almost surely, 2^{21224522542211} is an apocalyptic number.

21224522542211 is a deficient number, since it is larger than the sum of its proper divisors (57084256813).

21224522542211 is a wasteful number, since it uses less digits than its factorization.

21224522542211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487141.

The product of its digits is 51200, while the sum is 35.

Subtracting from 21224522542211 its reverse (11224522542212), we obtain a palindrome (9999999999999).

The spelling of 21224522542211 in words is "twenty-one trillion, two hundred twenty-four billion, five hundred twenty-two million, five hundred forty-two thousand, two hundred eleven".