21224044201111 has 8 divisors (see below), whose sum is σ = 21481663969584. Its totient is φ = 20966469870720.

The previous prime is 21224044201103. The next prime is 21224044201141. The reversal of 21224044201111 is 11110244042212.

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 21224044201111 - 2³ = 21224044201103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21224044201141) 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, 10419186 + ... + 12288511.

It is an arithmetic number, because the mean of its divisors is an integer number (2685207996198).

Almost surely, 2^{21224044201111} is an apocalyptic number.

21224044201111 is a deficient number, since it is larger than the sum of its proper divisors (257619768473).

21224044201111 is a wasteful number, since it uses less digits than its factorization.

21224044201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22719041.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 21224044201111 its reverse (11110244042212), we get a palindrome (32334288243323).

The spelling of 21224044201111 in words is "twenty-one trillion, two hundred twenty-four billion, forty-four million, two hundred one thousand, one hundred eleven".