20422440244207 has 4 divisors (see below), whose sum is σ = 20422613157160. Its totient is φ = 20422267331256.

The previous prime is 20422440244181. The next prime is 20422440244211. The reversal of 20422440244207 is 70244204422402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20422440244207 - 2⁷ = 20422440244079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422440044207) 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, 86279193 + ... + 86515570.

It is an arithmetic number, because the mean of its divisors is an integer number (5105653289290).

Almost surely, 2^{20422440244207} is an apocalyptic number.

20422440244207 is a deficient number, since it is larger than the sum of its proper divisors (172912953).

20422440244207 is a wasteful number, since it uses less digits than its factorization.

20422440244207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172912952.

The product of its (nonzero) digits is 229376, while the sum is 37.

Adding to 20422440244207 its reverse (70244204422402), we get a palindrome (90666644666609).

The spelling of 20422440244207 in words is "twenty trillion, four hundred twenty-two billion, four hundred forty million, two hundred forty-four thousand, two hundred seven".