1011001201003 has 4 divisors (see below), whose sum is σ = 1023798684640. Its totient is φ = 998203717368.

The previous prime is 1011001200973. The next prime is 1011001201019. The reversal of 1011001201003 is 3001021001101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011001201003 - 2¹⁷ = 1011001069931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011001201703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6398741700 + ... + 6398741857.

It is an arithmetic number, because the mean of its divisors is an integer number (255949671160).

Almost surely, 2^{1011001201003} is an apocalyptic number.

1011001201003 is a deficient number, since it is larger than the sum of its proper divisors (12797483637).

1011001201003 is an equidigital number, since it uses as much as digits as its factorization.

1011001201003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12797483636.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 1011001201003 its reverse (3001021001101), we get a palindrome (4012022202104).

The spelling of 1011001201003 in words is "one trillion, eleven billion, one million, two hundred one thousand, three".