203011300321121 has 16 divisors (see below), whose sum is σ = 214174865352960. Its totient is φ = 191896090338960.

The previous prime is 203011300321097. The next prime is 203011300321147. The reversal of 203011300321121 is 121123003110302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 203011300321121 - 2¹⁰ = 203011300320097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203011300321093 and 203011300321102.

It is not an unprimeable number, because it can be changed into a prime (203011300321321) 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, 8604410 + ... + 21910236.

It is an arithmetic number, because the mean of its divisors is an integer number (13385929084560).

Almost surely, 2^{203011300321121} is an apocalyptic number.

It is an amenable number.

203011300321121 is a deficient number, since it is larger than the sum of its proper divisors (11163565031839).

203011300321121 is a wasteful number, since it uses less digits than its factorization.

203011300321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13307644.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 203011300321121 its reverse (121123003110302), we get a palindrome (324134303431423).

The spelling of 203011300321121 in words is "two hundred three trillion, eleven billion, three hundred million, three hundred twenty-one thousand, one hundred twenty-one".