22011002321 has 24 divisors (see below), whose sum is σ = 27942374016. Its totient is φ = 17145263520.

The previous prime is 22011002311. The next prime is 22011002329. The reversal of 22011002321 is 12320011022.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-22011002321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22011002296 and 22011002305.

It is not an unprimeable number, because it can be changed into a prime (22011002329) 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, 2003375 + ... + 2014331.

It is an arithmetic number, because the mean of its divisors is an integer number (1164265584).

Almost surely, 2^22011002321 is an apocalyptic number.

It is an amenable number.

22011002321 is a deficient number, since it is larger than the sum of its proper divisors (5931371695).

22011002321 is a wasteful number, since it uses less digits than its factorization.

22011002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14709 (or 14702 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22011002321 its reverse (12320011022), we get a palindrome (34331013343).

The spelling of 22011002321 in words is "twenty-two billion, eleven million, two thousand, three hundred twenty-one".