1022221064 has 8 divisors (see below), whose sum is σ = 1916664510. Its totient is φ = 511110528.

The previous prime is 1022221051. The next prime is 1022221091. The reversal of 1022221064 is 4601222201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1019524900 + 2696164 = 31930^2 + 1642^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 63888809 + ... + 63888824.

Almost surely, 2^1022221064 is an apocalyptic number.

It is an amenable number.

1022221064 is a deficient number, since it is larger than the sum of its proper divisors (894443446).

1022221064 is a wasteful number, since it uses less digits than its factorization.

1022221064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127777639 (or 127777635 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1022221064 is about 31972.1920424609. The cubic root of 1022221064 is about 1007.3528247931.

Adding to 1022221064 its reverse (4601222201), we get a palindrome (5623443265).

The spelling of 1022221064 in words is "one billion, twenty-two million, two hundred twenty-one thousand, sixty-four".