1020111201003 has 24 divisors (see below), whose sum is σ = 1393603617168. Its totient is φ = 663511620928.

The previous prime is 1020111200957. The next prime is 1020111201049. The reversal of 1020111201003 is 3001021110201.

It is an interprime number because it is at equal distance from previous prime (1020111200957) and next prime (1020111201049).

It is not a de Polignac number, because 1020111201003 - 2¹⁷ = 1020111069931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020111201003.

It is not an unprimeable number, because it can be changed into a prime (1020111206003) 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 in 23 ways as a sum of consecutive naturals, for example, 4994401 + ... + 5194637.

It is an arithmetic number, because the mean of its divisors is an integer number (58066817382).

Almost surely, 2^{1020111201003} is an apocalyptic number.

1020111201003 is a deficient number, since it is larger than the sum of its proper divisors (373492416165).

1020111201003 is an equidigital number, since it uses as much as digits as its factorization.

1020111201003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200651 (or 200472 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 1020111201003 its reverse (3001021110201), we get a palindrome (4021132311204).

The spelling of 1020111201003 in words is "one trillion, twenty billion, one hundred eleven million, two hundred one thousand, three".