400220203 has 2 divisors, whose sum is σ = 400220204. Its totient is φ = 400220202.

The previous prime is 400220201. The next prime is 400220209. The reversal of 400220203 is 302022004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400220203 - 2¹ = 400220201 is a prime.

It is a super-2 number, since 2×400220203² = 320352421778722418, which contains 22 as substring.

Together with 400220201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (400220201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200110101 + 200110102.

It is an arithmetic number, because the mean of its divisors is an integer number (200110102).

Almost surely, 2^400220203 is an apocalyptic number.

400220203 is a deficient number, since it is larger than the sum of its proper divisors (1).

400220203 is an equidigital number, since it uses as much as digits as its factorization.

400220203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 400220203 is about 20005.5043175622. The cubic root of 400220203 is about 736.9414807231.

Adding to 400220203 its reverse (302022004), we get a palindrome (702242207).

The spelling of 400220203 in words is "four hundred million, two hundred twenty thousand, two hundred three".