205212213203 has 16 divisors (see below), whose sum is σ = 228524633856. Its totient is φ = 183383915520.

The previous prime is 205212213187. The next prime is 205212213209. The reversal of 205212213203 is 302312212502.

It is a cyclic number.

It is not a de Polignac number, because 205212213203 - 2⁴ = 205212213187 is a prime.

It is a super-2 number, since 2×205212213203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205212213209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3645626 + ... + 3701487.

It is an arithmetic number, because the mean of its divisors is an integer number (14282789616).

Almost surely, 2^205212213203 is an apocalyptic number.

205212213203 is a deficient number, since it is larger than the sum of its proper divisors (23312420653).

205212213203 is a wasteful number, since it uses less digits than its factorization.

205212213203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7347214.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 205212213203 its reverse (302312212502), we get a palindrome (507524425705).

The spelling of 205212213203 in words is "two hundred five billion, two hundred twelve million, two hundred thirteen thousand, two hundred three".