400020220195 has 4 divisors (see below), whose sum is σ = 480024264240. Its totient is φ = 320016176152.

The previous prime is 400020220153. The next prime is 400020220199. The reversal of 400020220195 is 591022020004.

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 400020220195 - 2¹⁷ = 400020089123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400020220199) 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, 40002022015 + ... + 40002022024.

It is an arithmetic number, because the mean of its divisors is an integer number (120006066060).

Almost surely, 2^400020220195 is an apocalyptic number.

400020220195 is a deficient number, since it is larger than the sum of its proper divisors (80004044045).

400020220195 is an equidigital number, since it uses as much as digits as its factorization.

400020220195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80004044044.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 400020220195 its reverse (591022020004), we get a palindrome (991042240199).

The spelling of 400020220195 in words is "four hundred billion, twenty million, two hundred twenty thousand, one hundred ninety-five".