203113223121011 has 16 divisors (see below), whose sum is σ = 233437569001728. Its totient is φ = 173116131746400.

The previous prime is 203113223120981. The next prime is 203113223121013. The reversal of 203113223121011 is 110121322311302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 203113223121011 - 2⁶ = 203113223120947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203113223121013) 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, 2701316 + ... + 20335278.

It is an arithmetic number, because the mean of its divisors is an integer number (14589848062608).

Almost surely, 2^{203113223121011} is an apocalyptic number.

203113223121011 is a deficient number, since it is larger than the sum of its proper divisors (30324345880717).

203113223121011 is a wasteful number, since it uses less digits than its factorization.

203113223121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17643242.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 203113223121011 its reverse (110121322311302), we get a palindrome (313234545432313).

The spelling of 203113223121011 in words is "two hundred three trillion, one hundred thirteen billion, two hundred twenty-three million, one hundred twenty-one thousand, eleven".