203021232011 has 16 divisors (see below), whose sum is σ = 220289406624. Its totient is φ = 185989626624.

The previous prime is 203021231993. The next prime is 203021232041. The reversal of 203021232011 is 110232120302.

It is a cyclic number.

It is not a de Polignac number, because 203021232011 - 2¹⁸ = 203020969867 is a prime.

It is a super-2 number, since 2×203021232011² (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 (203021232041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8513741 + ... + 8537553.

It is an arithmetic number, because the mean of its divisors is an integer number (13768087914).

Almost surely, 2^203021232011 is an apocalyptic number.

203021232011 is a deficient number, since it is larger than the sum of its proper divisors (17268174613).

203021232011 is a wasteful number, since it uses less digits than its factorization.

203021232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28750.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 203021232011 its reverse (110232120302), we get a palindrome (313253352313).

The spelling of 203021232011 in words is "two hundred three billion, twenty-one million, two hundred thirty-two thousand, eleven".