10000121203 has 2 divisors, whose sum is σ = 10000121204. Its totient is φ = 10000121202.

The previous prime is 10000121149. The next prime is 10000121213. The reversal of 10000121203 is 30212100001.

It is an a-pointer prime, because the next prime (10000121213) can be obtained adding 10000121203 to its sum of digits (10).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10000121203 - 2¹⁷ = 9999990131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10000121203.

It is not a weakly prime, because it can be changed into another prime (10000121213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000060601 + 5000060602.

It is an arithmetic number, because the mean of its divisors is an integer number (5000060602).

Almost surely, 2^10000121203 is an apocalyptic number.

10000121203 is a deficient number, since it is larger than the sum of its proper divisors (1).

10000121203 is an equidigital number, since it uses as much as digits as its factorization.

10000121203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 10000121203 its reverse (30212100001), we get a palindrome (40212221204).

The spelling of 10000121203 in words is "ten billion, one hundred twenty-one thousand, two hundred three".