1020123011203 has 2 divisors, whose sum is σ = 1020123011204. Its totient is φ = 1020123011202.

The previous prime is 1020123011087. The next prime is 1020123011213. The reversal of 1020123011203 is 3021103210201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020123011203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020123011213) 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, 510061505601 + 510061505602.

It is an arithmetic number, because the mean of its divisors is an integer number (510061505602).

Almost surely, 2^{1020123011203} is an apocalyptic number.

1020123011203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020123011203 is an equidigital number, since it uses as much as digits as its factorization.

1020123011203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1020123011203 its reverse (3021103210201), we get a palindrome (4041226221404).

The spelling of 1020123011203 in words is "one trillion, twenty billion, one hundred twenty-three million, eleven thousand, two hundred three".