21113220001133 has 16 divisors (see below), whose sum is σ = 22865440752000. Its totient is φ = 19379313600960.

The previous prime is 21113220001129. The next prime is 21113220001169. The reversal of 21113220001133 is 33110002231112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21113220001133 - 2² = 21113220001129 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 (21113220001333) 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, 50569568 + ... + 50985366.

It is an arithmetic number, because the mean of its divisors is an integer number (1429090047000).

Almost surely, 2^{21113220001133} is an apocalyptic number.

It is an amenable number.

21113220001133 is a deficient number, since it is larger than the sum of its proper divisors (1752220750867).

21113220001133 is a wasteful number, since it uses less digits than its factorization.

21113220001133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437812.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21113220001133 its reverse (33110002231112), we get a palindrome (54223222232245).

The spelling of 21113220001133 in words is "twenty-one trillion, one hundred thirteen billion, two hundred twenty million, one thousand, one hundred thirty-three".