1022221243 has 2 divisors, whose sum is σ = 1022221244. Its totient is φ = 1022221242.

The previous prime is 1022221231. The next prime is 1022221301. The reversal of 1022221243 is 3421222201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1022221243 - 2¹⁷ = 1022090171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1022221243.

It is not a weakly prime, because it can be changed into another prime (1022221643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511110621 + 511110622.

It is an arithmetic number, because the mean of its divisors is an integer number (511110622).

Almost surely, 2^1022221243 is an apocalyptic number.

1022221243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022221243 is an equidigital number, since it uses as much as digits as its factorization.

1022221243 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 19.

The square root of 1022221243 is about 31972.1948417684. The cubic root of 1022221243 is about 1007.3528835919.

Adding to 1022221243 its reverse (3421222201), we get a palindrome (4443443444).

The spelling of 1022221243 in words is "one billion, twenty-two million, two hundred twenty-one thousand, two hundred forty-three".