1121000001203 has 2 divisors, whose sum is σ = 1121000001204. Its totient is φ = 1121000001202.

The previous prime is 1121000001193. The next prime is 1121000001211. The reversal of 1121000001203 is 3021000001211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121000001203 - 2¹⁸ = 1120999739059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121000001263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560500000601 + 560500000602.

It is an arithmetic number, because the mean of its divisors is an integer number (560500000602).

Almost surely, 2^{1121000001203} is an apocalyptic number.

1121000001203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121000001203 is an equidigital number, since it uses as much as digits as its factorization.

1121000001203 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 11.

Adding to 1121000001203 its reverse (3021000001211), we get a palindrome (4142000002414).

The spelling of 1121000001203 in words is "one trillion, one hundred twenty-one billion, one thousand, two hundred three".