1022001001 has 8 divisors (see below), whose sum is σ = 1168574400. Its totient is φ = 875570928.

The previous prime is 1022000999. The next prime is 1022001007. The reversal of 1022001001 is 1001002201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1022001001 - 2¹ = 1022000999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is not an unprimeable number, because it can be changed into a prime (1022001007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20086 + ... + 49471.

It is an arithmetic number, because the mean of its divisors is an integer number (146071800).

Almost surely, 2^1022001001 is an apocalyptic number.

It is an amenable number.

1022001001 is a deficient number, since it is larger than the sum of its proper divisors (146573399).

1022001001 is an equidigital number, since it uses as much as digits as its factorization.

1022001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71663.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1022001001 is about 31968.7503822092. The cubic root of 1022001001 is about 1007.2805322130.

Adding to 1022001001 its reverse (1001002201), we get a palindrome (2023003202).

The spelling of 1022001001 in words is "one billion, twenty-two million, one thousand, one".