1021001222 has 16 divisors (see below), whose sum is σ = 1561514112. Its totient is φ = 500510400.

The previous prime is 1021001207. The next prime is 1021001237. The reversal of 1021001222 is 2221001201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1021001207) and next prime (1021001237).

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 7 ways as a sum of consecutive naturals, for example, 204338 + ... + 209274.

It is an arithmetic number, because the mean of its divisors is an integer number (97594632).

Almost surely, 2^1021001222 is an apocalyptic number.

1021001222 is a deficient number, since it is larger than the sum of its proper divisors (540512890).

1021001222 is a wasteful number, since it uses less digits than its factorization.

1021001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6943.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1021001222 is about 31953.1097391162. The cubic root of 1021001222 is about 1006.9519655131.

Adding to 1021001222 its reverse (2221001201), we get a palindrome (3242002423).

The spelling of 1021001222 in words is "one billion, twenty-one million, one thousand, two hundred twenty-two".