10121111100203 has 2 divisors, whose sum is σ = 10121111100204. Its totient is φ = 10121111100202.

The previous prime is 10121111100173. The next prime is 10121111100251. The reversal of 10121111100203 is 30200111112101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10121111100203 - 2³⁴ = 10103931231019 is a prime.

It is a super-2 number, since 2×10121111100203² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10121111100263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060555550101 + 5060555550102.

It is an arithmetic number, because the mean of its divisors is an integer number (5060555550102).

Almost surely, 2^{10121111100203} is an apocalyptic number.

10121111100203 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121111100203 is an equidigital number, since it uses as much as digits as its factorization.

10121111100203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 10121111100203 its reverse (30200111112101), we get a palindrome (40321222212304).

The spelling of 10121111100203 in words is "ten trillion, one hundred twenty-one billion, one hundred eleven million, one hundred thousand, two hundred three".