1022222090 has 8 divisors (see below), whose sum is σ = 1839999780. Its totient is φ = 408888832.

The previous prime is 1022222083. The next prime is 1022222093. The reversal of 1022222090 is 902222201.

It can be written as a sum of positive squares in 2 ways, for example, as 1004065969 + 18156121 = 31687^2 + 4261^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1022222093) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 51111095 + ... + 51111114.

Almost surely, 2^1022222090 is an apocalyptic number.

1022222090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1022222090 is a deficient number, since it is larger than the sum of its proper divisors (817777690).

1022222090 is a wasteful number, since it uses less digits than its factorization.

1022222090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102222216.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1022222090 is about 31972.2080876501. The cubic root of 1022222090 is about 1007.3531618186.

Adding to 1022222090 its reverse (902222201), we get a palindrome (1924444291).

The spelling of 1022222090 in words is "one billion, twenty-two million, two hundred twenty-two thousand, ninety".