1002221994 has 16 divisors (see below), whose sum is σ = 2109941280. Its totient is φ = 316491120.

The previous prime is 1002221989. The next prime is 1002222017. The reversal of 1002221994 is 4991222001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4395597 + ... + 4395824.

It is an arithmetic number, because the mean of its divisors is an integer number (131871330).

Almost surely, 2^1002221994 is an apocalyptic number.

1002221994 is an abundant number, since it is smaller than the sum of its proper divisors (1107719286).

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

1002221994 is a wasteful number, since it uses less digits than its factorization.

1002221994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8791445.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1002221994 is about 31657.8899170491. The cubic root of 1002221994 is about 1000.7401167587.

Adding to 1002221994 its reverse (4991222001), we get a palindrome (5993443995).

The spelling of 1002221994 in words is "one billion, two million, two hundred twenty-one thousand, nine hundred ninety-four".