20400222205 has 8 divisors (see below), whose sum is σ = 26705745504. Its totient is φ = 14836525200.

The previous prime is 20400222149. The next prime is 20400222229. The reversal of 20400222205 is 50222200402.

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

It is not a de Polignac number, because 20400222205 - 2¹¹ = 20400220157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185456511 + ... + 185456620.

It is an arithmetic number, because the mean of its divisors is an integer number (3338218188).

Almost surely, 2^20400222205 is an apocalyptic number.

It is an amenable number.

20400222205 is a deficient number, since it is larger than the sum of its proper divisors (6305523299).

20400222205 is a wasteful number, since it uses less digits than its factorization.

20400222205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370913147.

The product of its (nonzero) digits is 640, while the sum is 19.

Adding to 20400222205 its reverse (50222200402), we get a palindrome (70622422607).

The spelling of 20400222205 in words is "twenty billion, four hundred million, two hundred twenty-two thousand, two hundred five".