1021222242 has 20 divisors (see below), whose sum is σ = 2288294646. Its totient is φ = 340407360.

The previous prime is 1021222229. The next prime is 1021222247. The reversal of 1021222242 is 2422221201.

It can be written as a sum of positive squares in only one way, i.e., 913913361 + 107308881 = 30231^2 + 10359^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1021222247) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3151759 + ... + 3152082.

Almost surely, 2^1021222242 is an apocalyptic number.

1021222242 is an abundant number, since it is smaller than the sum of its proper divisors (1267072404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021222242 is an equidigital number, since it uses as much as digits as its factorization.

1021222242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6303855 (or 6303846 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1021222242 is about 31956.5680572868. The cubic root of 1021222242 is about 1007.0246198388.

Adding to 1021222242 its reverse (2422221201), we get a palindrome (3443443443).

The spelling of 1021222242 in words is "one billion, twenty-one million, two hundred twenty-two thousand, two hundred forty-two".