1022113221 has 16 divisors (see below), whose sum is σ = 1375281600. Its totient is φ = 675192960.

The previous prime is 1022113217. The next prime is 1022113243. The reversal of 1022113221 is 1223112201.

It is not a de Polignac number, because 1022113221 - 2² = 1022113217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1022113221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022113921) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 333705 + ... + 336753.

It is an arithmetic number, because the mean of its divisors is an integer number (85955100).

Almost surely, 2^1022113221 is an apocalyptic number.

It is an amenable number.

1022113221 is a deficient number, since it is larger than the sum of its proper divisors (353168379).

1022113221 is a wasteful number, since it uses less digits than its factorization.

1022113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1022113221 is about 31970.5054855252. The cubic root of 1022113221 is about 1007.3173987406.

Adding to 1022113221 its reverse (1223112201), we get a palindrome (2245225422).

The spelling of 1022113221 in words is "one billion, twenty-two million, one hundred thirteen thousand, two hundred twenty-one".