1022001 has 8 divisors (see below), whose sum is σ = 1367520. Its totient is φ = 678912.

The previous prime is 1021973. The next prime is 1022011. The reversal of 1022001 is 1002201.

It is a happy number.

1022001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1022001 - 2¹⁰ = 1020977 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1022011) 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, 945 + ... + 1713.

It is an arithmetic number, because the mean of its divisors is an integer number (170940).

2^1022001 is an apocalyptic number.

It is an amenable number.

1022001 is a deficient number, since it is larger than the sum of its proper divisors (345519).

1022001 is an equidigital number, since it uses as much as digits as its factorization.

1022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1022001 is about 1010.9406510770. The cubic root of 1022001 is about 100.7280531885.

Adding to 1022001 its reverse (1002201), we get a palindrome (2024202).

It can be divided in two parts, 102200 and 1, that added together give a palindrome (102201).

The spelling of 1022001 in words is "one million, twenty-two thousand, one".