1022001020993 has 4 divisors (see below), whose sum is σ = 1057242435540. Its totient is φ = 986759606448.

The previous prime is 1022001020987. The next prime is 1022001021047. The reversal of 1022001020993 is 3990201002201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 696585536689 + 325415484304 = 834617^2 + 570452^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022001020993 - 2⁸ = 1022001020737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 35241414517 = 1022001020993 / (1 + 0 + 2 + 2 + 0 + 0 + 1 + 0 + 2 + 0 + 9 + 9 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022001020393) 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, 17620707230 + ... + 17620707287.

It is an arithmetic number, because the mean of its divisors is an integer number (264310608885).

Almost surely, 2^{1022001020993} is an apocalyptic number.

It is an amenable number.

1022001020993 is a deficient number, since it is larger than the sum of its proper divisors (35241414547).

1022001020993 is an equidigital number, since it uses as much as digits as its factorization.

1022001020993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35241414546.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 1022001020993 in words is "one trillion, twenty-two billion, one million, twenty thousand, nine hundred ninety-three".