1022222000 has 40 divisors (see below), whose sum is σ = 2471737632. Its totient is φ = 408888000.

The previous prime is 1022221999. The next prime is 1022222017. The reversal of 1022222000 is 2222201.

It is a tau number, because it is divible by the number of its divisors (40).

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, 253556 + ... + 257555.

Almost surely, 2^1022222000 is an apocalyptic number.

1022222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022222000 is an abundant number, since it is smaller than the sum of its proper divisors (1449515632).

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

1022222000 is an equidigital number, since it uses as much as digits as its factorization.

1022222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511134 (or 511118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 1022222000 is about 31972.2066801777. The cubic root of 1022222000 is about 1007.3531322550.

Adding to 1022222000 its reverse (2222201), we get a palindrome (1024444201).

The spelling of 1022222000 in words is "one billion, twenty-two million, two hundred twenty-two thousand".