203321032100121 has 16 divisors (see below), whose sum is σ = 299838639162944. Its totient is φ = 121738996350144.

The previous prime is 203321032100077. The next prime is 203321032100161. The reversal of 203321032100121 is 121001230123302.

It is not a de Polignac number, because 203321032100121 - 2³¹ = 203318884616473 is a prime.

It is a super-3 number, since 3×203321032100121³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (203321032100161) 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, 70450806631 + ... + 70450809516.

It is an arithmetic number, because the mean of its divisors is an integer number (18739914947684).

Almost surely, 2^{203321032100121} is an apocalyptic number.

It is an amenable number.

203321032100121 is a deficient number, since it is larger than the sum of its proper divisors (96517607062823).

203321032100121 is a wasteful number, since it uses less digits than its factorization.

203321032100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140901616200.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 203321032100121 its reverse (121001230123302), we get a palindrome (324322262223423).

The spelling of 203321032100121 in words is "two hundred three trillion, three hundred twenty-one billion, thirty-two million, one hundred thousand, one hundred twenty-one".