1022064221 has 2 divisors, whose sum is σ = 1022064222. Its totient is φ = 1022064220.

The previous prime is 1022064217. The next prime is 1022064223. The reversal of 1022064221 is 1224602201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 993825625 + 28238596 = 31525^2 + 5314^2 .

It is an emirp because it is prime and its reverse (1224602201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1022064221 - 2² = 1022064217 is a prime.

Together with 1022064223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1022064193 and 1022064202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022064223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511032110 + 511032111.

It is an arithmetic number, because the mean of its divisors is an integer number (511032111).

Almost surely, 2^1022064221 is an apocalyptic number.

It is an amenable number.

1022064221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022064221 is an equidigital number, since it uses as much as digits as its factorization.

1022064221 is an evil number, because the sum of its binary digits is even.

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

The square root of 1022064221 is about 31969.7391450102. The cubic root of 1022064221 is about 1007.3013015868.

Adding to 1022064221 its reverse (1224602201), we get a palindrome (2246666422).

The spelling of 1022064221 in words is "one billion, twenty-two million, sixty-four thousand, two hundred twenty-one".