203010020121 has 16 divisors (see below), whose sum is σ = 274035371904. Its totient is φ = 133672665984.

The previous prime is 203010020117. The next prime is 203010020123. The reversal of 203010020121 is 121020010302.

It is not a de Polignac number, because 203010020121 - 2² = 203010020117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203010020097 and 203010020106.

It is not an unprimeable number, because it can be changed into a prime (203010020123) 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, 1211820 + ... + 1369133.

It is an arithmetic number, because the mean of its divisors is an integer number (17127210744).

Almost surely, 2^203010020121 is an apocalyptic number.

It is an amenable number.

203010020121 is a deficient number, since it is larger than the sum of its proper divisors (71025351783).

203010020121 is a wasteful number, since it uses less digits than its factorization.

203010020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581280.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 203010020121 its reverse (121020010302), we get a palindrome (324030030423).

The spelling of 203010020121 in words is "two hundred three billion, ten million, twenty thousand, one hundred twenty-one".