1021444222 has 4 divisors (see below), whose sum is σ = 1532166336. Its totient is φ = 510722110.

The previous prime is 1021444217. The next prime is 1021444223. The reversal of 1021444222 is 2224441201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2224441201 = 29 ⋅76704869.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1021444193 and 1021444202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021444223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255361054 + ... + 255361057.

It is an arithmetic number, because the mean of its divisors is an integer number (383041584).

Almost surely, 2^1021444222 is an apocalyptic number.

1021444222 is a deficient number, since it is larger than the sum of its proper divisors (510722114).

1021444222 is an equidigital number, since it uses as much as digits as its factorization.

1021444222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510722113.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 1021444222 is about 31960.0410199987. The cubic root of 1021444222 is about 1007.0975791880.

Adding to 1021444222 its reverse (2224441201), we get a palindrome (3245885423).

The spelling of 1021444222 in words is "one billion, twenty-one million, four hundred forty-four thousand, two hundred twenty-two".