1012203202123 has 2 divisors, whose sum is σ = 1012203202124. Its totient is φ = 1012203202122.

The previous prime is 1012203202103. The next prime is 1012203202181. The reversal of 1012203202123 is 3212023022101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012203202123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012203202123.

It is not a weakly prime, because it can be changed into another prime (1012203202103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506101601061 + 506101601062.

It is an arithmetic number, because the mean of its divisors is an integer number (506101601062).

Almost surely, 2^{1012203202123} is an apocalyptic number.

1012203202123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012203202123 is an equidigital number, since it uses as much as digits as its factorization.

1012203202123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1012203202123 its reverse (3212023022101), we get a palindrome (4224226224224).

The spelling of 1012203202123 in words is "one trillion, twelve billion, two hundred three million, two hundred two thousand, one hundred twenty-three".