22011100321 has 24 divisors (see below), whose sum is σ = 25792572960. Its totient is φ = 18728740800.

The previous prime is 22011100291. The next prime is 22011100361. The reversal of 22011100321 is 12300111022.

It is not a de Polignac number, because 22011100321 - 2²⁹ = 21474229409 is a prime.

It is a super-2 number, since 2×22011100321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22011100361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4329501 + ... + 4334581.

It is an arithmetic number, because the mean of its divisors is an integer number (1074690540).

Almost surely, 2^22011100321 is an apocalyptic number.

It is an amenable number.

22011100321 is a deficient number, since it is larger than the sum of its proper divisors (3781472639).

22011100321 is a wasteful number, since it uses less digits than its factorization.

22011100321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5725 (or 5718 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 22011100321 its reverse (12300111022), we get a palindrome (34311211343).

The spelling of 22011100321 in words is "twenty-two billion, eleven million, one hundred thousand, three hundred twenty-one".