1002001222 has 8 divisors (see below), whose sum is σ = 1537955496. Its totient is φ = 489349392.

The previous prime is 1002001219. The next prime is 1002001237. The reversal of 1002001222 is 2221002001.

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

It is a junction number, because it is equal to n+sod(n) for n = 1002001199 and 1002001208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5825503 + ... + 5825674.

It is an arithmetic number, because the mean of its divisors is an integer number (192244437).

Almost surely, 2^1002001222 is an apocalyptic number.

1002001222 is a deficient number, since it is larger than the sum of its proper divisors (535954274).

1002001222 is a wasteful number, since it uses less digits than its factorization.

1002001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11651222.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1002001222 is about 31654.4028849069. The cubic root of 1002001222 is about 1000.6666295064. Note that the first 4 decimals are identical.

Adding to 1002001222 its reverse (2221002001), we get a palindrome (3223003223).

It can be divided in two parts, 1002001 and 222, that multiplied together give a palindrome (222444222).

The spelling of 1002001222 in words is "one billion, two million, one thousand, two hundred twenty-two".