1022220445 has 8 divisors (see below), whose sum is σ = 1227925944. Its totient is φ = 816935424.

The previous prime is 1022220427. The next prime is 1022220457. The reversal of 1022220445 is 5440222201.

It can be written as a sum of positive squares in 4 ways, for example, as 197037369 + 825183076 = 14037^2 + 28726^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1022220445 - 2⁵ = 1022220413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99744 + ... + 109513.

It is an arithmetic number, because the mean of its divisors is an integer number (153490743).

Almost surely, 2^1022220445 is an apocalyptic number.

It is an amenable number.

1022220445 is a deficient number, since it is larger than the sum of its proper divisors (205705499).

1022220445 is an equidigital number, since it uses as much as digits as its factorization.

1022220445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210239.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 1022220445 is about 31972.1823621723. The cubic root of 1022220445 is about 1007.3526214609.

Adding to 1022220445 its reverse (5440222201), we get a palindrome (6462442646).

It can be divided in two parts, 10222 and 20445, that multiplied together give a triangular number (208988790 = T₂₀₄₄₄).

The spelling of 1022220445 in words is "one billion, twenty-two million, two hundred twenty thousand, four hundred forty-five".