1000222021973 has 2 divisors, whose sum is σ = 1000222021974. Its totient is φ = 1000222021972.

The previous prime is 1000222021969. The next prime is 1000222022003. The reversal of 1000222021973 is 3791202220001.

1000222021973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 980906025649 + 19315996324 = 990407^2 + 138982^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000222021973 - 2² = 1000222021969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000222021933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500111010986 + 500111010987.

It is an arithmetic number, because the mean of its divisors is an integer number (500111010987).

Almost surely, 2^{1000222021973} is an apocalyptic number.

It is an amenable number.

1000222021973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000222021973 is an equidigital number, since it uses as much as digits as its factorization.

1000222021973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 1000222021973 its reverse (3791202220001), we get a palindrome (4791424241974).

The spelling of 1000222021973 in words is "one trillion, two hundred twenty-two million, twenty-one thousand, nine hundred seventy-three".