1012211222873 has 2 divisors, whose sum is σ = 1012211222874. Its totient is φ = 1012211222872.

The previous prime is 1012211222807. The next prime is 1012211222903. The reversal of 1012211222873 is 3782221122101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 510085925209 + 502125297664 = 714203^2 + 708608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012211222873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012211225873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506105611436 + 506105611437.

It is an arithmetic number, because the mean of its divisors is an integer number (506105611437).

Almost surely, 2^{1012211222873} is an apocalyptic number.

It is an amenable number.

1012211222873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012211222873 is an equidigital number, since it uses as much as digits as its factorization.

1012211222873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

Adding to 1012211222873 its reverse (3782221122101), we get a palindrome (4794432344974).

The spelling of 1012211222873 in words is "one trillion, twelve billion, two hundred eleven million, two hundred twenty-two thousand, eight hundred seventy-three".