22247220361 has 4 divisors (see below), whose sum is σ = 22249648000. Its totient is φ = 22244792724.

The previous prime is 22247220353. The next prime is 22247220383. The reversal of 22247220361 is 16302274222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22247220361 - 2³ = 22247220353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22247220161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200021 + ... + 1218418.

It is an arithmetic number, because the mean of its divisors is an integer number (5562412000).

Almost surely, 2^22247220361 is an apocalyptic number.

It is an amenable number.

22247220361 is a deficient number, since it is larger than the sum of its proper divisors (2427639).

22247220361 is an equidigital number, since it uses as much as digits as its factorization.

22247220361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427638.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 22247220361 its reverse (16302274222), we get a palindrome (38549494583).

The spelling of 22247220361 in words is "twenty-two billion, two hundred forty-seven million, two hundred twenty thousand, three hundred sixty-one".