1021231222 has 16 divisors (see below), whose sum is σ = 1671634944. Its totient is φ = 464049000.

The previous prime is 1021231217. The next prime is 1021231273. The reversal of 1021231222 is 2221321201.

It is a happy number.

It is a super-2 number, since 2×1021231222² = 2085826417575226568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021231196 and 1021231205.

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, 95947 + ... + 106057.

It is an arithmetic number, because the mean of its divisors is an integer number (104477184).

Almost surely, 2^1021231222 is an apocalyptic number.

1021231222 is a deficient number, since it is larger than the sum of its proper divisors (650403722).

1021231222 is a wasteful number, since it uses less digits than its factorization.

1021231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14715.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1021231222 is about 31956.7085601756. The cubic root of 1021231222 is about 1007.0275715485.

Adding to 1021231222 its reverse (2221321201), we get a palindrome (3242552423).

The spelling of 1021231222 in words is "one billion, twenty-one million, two hundred thirty-one thousand, two hundred twenty-two".