22001002 has 16 divisors (see below), whose sum is σ = 33466752. Its totient is φ = 10846800.

The previous prime is 22000963. The next prime is 22001033. The reversal of 22001002 is 20010022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79288 + ... + 79564.

It is an arithmetic number, because the mean of its divisors is an integer number (2091672).

Almost surely, 2^22001002 is an apocalyptic number.

22001002 is a deficient number, since it is larger than the sum of its proper divisors (11465750).

22001002 is a wasteful number, since it uses less digits than its factorization.

22001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 22001002 is about 4690.5225721661. The cubic root of 22001002 is about 280.2081870061.

Adding to 22001002 its reverse (20010022), we get a palindrome (42011024).

It can be divided in two parts, 2 and 2001002, that multiplied together give a palindrome (4002004).

The spelling of 22001002 in words is "twenty-two million, one thousand, two".