1001211101003 has 2 divisors, whose sum is σ = 1001211101004. Its totient is φ = 1001211101002.

The previous prime is 1001211100987. The next prime is 1001211101053. The reversal of 1001211101003 is 3001011121001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001211101003 - 2⁴ = 1001211100987 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1001211101053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500605550501 + 500605550502.

It is an arithmetic number, because the mean of its divisors is an integer number (500605550502).

Almost surely, 2^{1001211101003} is an apocalyptic number.

1001211101003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001211101003 is an equidigital number, since it uses as much as digits as its factorization.

1001211101003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 1001211101003 its reverse (3001011121001), we get a palindrome (4002222222004).

The spelling of 1001211101003 in words is "one trillion, one billion, two hundred eleven million, one hundred one thousand, three".