1028994998201 has 4 divisors (see below), whose sum is σ = 1031246628852. Its totient is φ = 1026743367552.

The previous prime is 1028994998183. The next prime is 1028994998219.

It is a happy number.

1028994998201 is nontrivially palindromic in base 10.

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

It is an interprime number because it is at equal distance from previous prime (1028994998183) and next prime (1028994998219).

It can be written as a sum of positive squares in 2 ways, for example, as 580302674176 + 448692324025 = 761776^2 + 669845^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028994998201 - 2³⁸ = 754117091257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028994298201) 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, 1125814640 + ... + 1125815553.

It is an arithmetic number, because the mean of its divisors is an integer number (257811657213).

Almost surely, 2^{1028994998201} is an apocalyptic number.

It is an amenable number.

1028994998201 is a deficient number, since it is larger than the sum of its proper divisors (2251630651).

1028994998201 is an equidigital number, since it uses as much as digits as its factorization.

1028994998201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251630650.

The product of its (nonzero) digits is 6718464, while the sum is 62.

The spelling of 1028994998201 in words is "one trillion, twenty-eight billion, nine hundred ninety-four million, nine hundred ninety-eight thousand, two hundred one".