205103223321 has 16 divisors (see below), whose sum is σ = 278532112320. Its totient is φ = 134212009280.

The previous prime is 205103223319. The next prime is 205103223323. The reversal of 205103223321 is 123322301502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (205103223319) and next prime (205103223323).

It is a cyclic number.

It is not a de Polignac number, because 205103223321 - 2¹ = 205103223319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205103223291 and 205103223300.

It is not an unprimeable number, because it can be changed into a prime (205103223323) 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, 771690 + ... + 1002851.

It is an arithmetic number, because the mean of its divisors is an integer number (17408257020).

Almost surely, 2^205103223321 is an apocalyptic number.

It is an amenable number.

205103223321 is a deficient number, since it is larger than the sum of its proper divisors (73428888999).

205103223321 is a wasteful number, since it uses less digits than its factorization.

205103223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775256.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 205103223321 its reverse (123322301502), we get a palindrome (328425524823).

The spelling of 205103223321 in words is "two hundred five billion, one hundred three million, two hundred twenty-three thousand, three hundred twenty-one".