22122420505 has 8 divisors (see below), whose sum is σ = 26572911624. Its totient is φ = 17680598400.

The previous prime is 22122420503. The next prime is 22122420557. The reversal of 22122420505 is 50502422122.

It can be written as a sum of positive squares in 4 ways, for example, as 17867529 + 22104552976 = 4227^2 + 148676^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22122420505 - 2¹ = 22122420503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22122420505.

It is not an unprimeable number, because it can be changed into a prime (22122420503) 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, 2161636 + ... + 2171845.

It is an arithmetic number, because the mean of its divisors is an integer number (3321613953).

Almost surely, 2^22122420505 is an apocalyptic number.

It is an amenable number.

22122420505 is a deficient number, since it is larger than the sum of its proper divisors (4450491119).

22122420505 is a wasteful number, since it uses less digits than its factorization.

22122420505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334507.

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 22122420505 its reverse (50502422122), we get a palindrome (72624842627).

The spelling of 22122420505 in words is "twenty-two billion, one hundred twenty-two million, four hundred twenty thousand, five hundred five".