1321022222 has 16 divisors (see below), whose sum is σ = 2168944512. Its totient is φ = 599706720.

The previous prime is 1321022201. The next prime is 1321022233. The reversal of 1321022222 is 2222201231.

It is a super-2 number, since 2×1321022222² = 3490199422035634568, which contains 22 as substring.

1321022222 is a modest number, since divided by 22222 gives 13210 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1321022222.

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, 414878 + ... + 418049.

It is an arithmetic number, because the mean of its divisors is an integer number (135559032).

Almost surely, 2^1321022222 is an apocalyptic number.

1321022222 is a deficient number, since it is larger than the sum of its proper divisors (847922290).

1321022222 is a wasteful number, since it uses less digits than its factorization.

1321022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833003.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1321022222 is about 36345.8693939215. The cubic root of 1321022222 is about 1097.2444035801.

Adding to 1321022222 its reverse (2222201231), we get a palindrome (3543223453).

The spelling of 1321022222 in words is "one billion, three hundred twenty-one million, twenty-two thousand, two hundred twenty-two".