22012220321 has 8 divisors (see below), whose sum is σ = 27091963584. Its totient is φ = 17416262160.

The previous prime is 22012220273. The next prime is 22012220333. The reversal of 22012220321 is 12302221022.

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 22012220321 - 2²² = 22008026017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22012220321.

It is not an unprimeable number, because it can be changed into a prime (22012220341) 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, 120946175 + ... + 120946356.

It is an arithmetic number, because the mean of its divisors is an integer number (3386495448).

Almost surely, 2^22012220321 is an apocalyptic number.

It is an amenable number.

22012220321 is a deficient number, since it is larger than the sum of its proper divisors (5079743263).

22012220321 is a wasteful number, since it uses less digits than its factorization.

22012220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241892551.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22012220321 its reverse (12302221022), we get a palindrome (34314441343).

The spelling of 22012220321 in words is "twenty-two billion, twelve million, two hundred twenty thousand, three hundred twenty-one".