22020345706 has 4 divisors (see below), whose sum is σ = 33030518562. Its totient is φ = 11010172852.

The previous prime is 22020345691. The next prime is 22020345707. The reversal of 22020345706 is 60754302022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60754302022 = 2 ⋅30377151011.

It can be written as a sum of positive squares in only one way, i.e., 18894976681 + 3125369025 = 137459^2 + 55905^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22020345707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505086425 + ... + 5505086428.

Almost surely, 2^22020345706 is an apocalyptic number.

22020345706 is a deficient number, since it is larger than the sum of its proper divisors (11010172856).

22020345706 is a wasteful number, since it uses less digits than its factorization.

22020345706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11010172855.

The product of its (nonzero) digits is 20160, while the sum is 31.

Adding to 22020345706 its reverse (60754302022), we get a palindrome (82774647728).

The spelling of 22020345706 in words is "twenty-two billion, twenty million, three hundred forty-five thousand, seven hundred six".