21334210242211 has 16 divisors (see below), whose sum is σ = 22644364748544. Its totient is φ = 20058433499104.

The previous prime is 21334210242209. The next prime is 21334210242227. The reversal of 21334210242211 is 11224201243312.

It is a cyclic number.

It is not a de Polignac number, because 21334210242211 - 2¹ = 21334210242209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21334210242211.

It is not an unprimeable number, because it can be changed into a prime (21334210242251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27988381 + ... + 28740526.

It is an arithmetic number, because the mean of its divisors is an integer number (1415272796784).

Almost surely, 2^{21334210242211} is an apocalyptic number.

21334210242211 is a deficient number, since it is larger than the sum of its proper divisors (1310154506333).

21334210242211 is a wasteful number, since it uses less digits than its factorization.

21334210242211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56729210.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21334210242211 its reverse (11224201243312), we get a palindrome (32558411485523).

The spelling of 21334210242211 in words is "twenty-one trillion, three hundred thirty-four billion, two hundred ten million, two hundred forty-two thousand, two hundred eleven".