21223100231011 has 8 divisors (see below), whose sum is σ = 24347195921664. Its totient is φ = 18122060597640.

The previous prime is 21223100231009. The next prime is 21223100231051. The reversal of 21223100231011 is 11013200132212.

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 21223100231011 - 2¹ = 21223100231009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21223100231011.

It is not an unprimeable number, because it can be changed into a prime (21223100231051) 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, 5764012345 + ... + 5764016026.

It is an arithmetic number, because the mean of its divisors is an integer number (3043399490208).

Almost surely, 2^{21223100231011} is an apocalyptic number.

21223100231011 is a deficient number, since it is larger than the sum of its proper divisors (3124095690653).

21223100231011 is a wasteful number, since it uses less digits than its factorization.

21223100231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11528028641.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21223100231011 its reverse (11013200132212), we get a palindrome (32236300363223).

The spelling of 21223100231011 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred million, two hundred thirty-one thousand, eleven".