20245222105 has 32 divisors (see below), whose sum is σ = 25591860000. Its totient is φ = 15354593280.

The previous prime is 20245222097. The next prime is 20245222139. The reversal of 20245222105 is 50122254202.

It can be written as a sum of positive squares in 16 ways, for example, as 11410726041 + 8834496064 = 106821^2 + 93992^2 .

It is not a de Polignac number, because 20245222105 - 2³ = 20245222097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20245222105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9472597 + ... + 9474733.

It is an arithmetic number, because the mean of its divisors is an integer number (799745625).

Almost surely, 2^20245222105 is an apocalyptic number.

It is an amenable number.

20245222105 is a deficient number, since it is larger than the sum of its proper divisors (5346637895).

20245222105 is a wasteful number, since it uses less digits than its factorization.

20245222105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469.

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

Adding to 20245222105 its reverse (50122254202), we get a palindrome (70367476307).

The spelling of 20245222105 in words is "twenty billion, two hundred forty-five million, two hundred twenty-two thousand, one hundred five".