10203010121 has 4 divisors (see below), whose sum is σ = 10370272644. Its totient is φ = 10035747600.

The previous prime is 10203010117. The next prime is 10203010217. The reversal of 10203010121 is 12101030201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2448270400 + 7754739721 = 49480^2 + 88061^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203010121 - 2² = 10203010117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10203010721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83631170 + ... + 83631291.

It is an arithmetic number, because the mean of its divisors is an integer number (2592568161).

Almost surely, 2^10203010121 is an apocalyptic number.

It is an amenable number.

10203010121 is a deficient number, since it is larger than the sum of its proper divisors (167262523).

10203010121 is an equidigital number, since it uses as much as digits as its factorization.

10203010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167262522.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10203010121 its reverse (12101030201), we get a palindrome (22304040322).

The spelling of 10203010121 in words is "ten billion, two hundred three million, ten thousand, one hundred twenty-one".