203011213321 has 16 divisors (see below), whose sum is σ = 233529713280. Its totient is φ = 172872311040.

The previous prime is 203011213291. The next prime is 203011213331. The reversal of 203011213321 is 123312110302.

It is a cyclic number.

It is not a de Polignac number, because 203011213321 - 2⁵ = 203011213289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203011213331) 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, 8869590 + ... + 8892448.

It is an arithmetic number, because the mean of its divisors is an integer number (14595607080).

Almost surely, 2^203011213321 is an apocalyptic number.

It is an amenable number.

203011213321 is a deficient number, since it is larger than the sum of its proper divisors (30518499959).

203011213321 is a wasteful number, since it uses less digits than its factorization.

203011213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31104.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 203011213321 its reverse (123312110302), we get a palindrome (326323323623).

The spelling of 203011213321 in words is "two hundred three billion, eleven million, two hundred thirteen thousand, three hundred twenty-one".