1021221200003 has 2 divisors, whose sum is σ = 1021221200004. Its totient is φ = 1021221200002.

The previous prime is 1021221199987. The next prime is 1021221200039. The reversal of 1021221200003 is 3000021221201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021221200003 - 2⁴ = 1021221199987 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021221200053) 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, 510610600001 + 510610600002.

It is an arithmetic number, because the mean of its divisors is an integer number (510610600002).

Almost surely, 2^{1021221200003} is an apocalyptic number.

1021221200003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021221200003 is an equidigital number, since it uses as much as digits as its factorization.

1021221200003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1021221200003 its reverse (3000021221201), we get a palindrome (4021242421204).

The spelling of 1021221200003 in words is "one trillion, twenty-one billion, two hundred twenty-one million, two hundred thousand, three".