1022001002001 has 20 divisors (see below), whose sum is σ = 1744791835072. Its totient is φ = 584000572248.

The previous prime is 1022001001997. The next prime is 1022001002021. The reversal of 1022001002001 is 1002001002201.

It is not a de Polignac number, because 1022001002001 - 2² = 1022001001997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1022001002021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 901234885 + ... + 901236018.

Almost surely, 2^{1022001002001} is an apocalyptic number.

It is an amenable number.

1022001002001 is a deficient number, since it is larger than the sum of its proper divisors (722790833071).

1022001002001 is an equidigital number, since it uses as much as digits as its factorization.

1022001002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802470922 (or 1802470913 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1022001002001 its reverse (1002001002201), we get a palindrome (2024002004202).

The spelling of 1022001002001 in words is "one trillion, twenty-two billion, one million, two thousand, one".