1001222004 has 144 divisors (see below), whose sum is σ = 2618685440. Its totient is φ = 297285120.

The previous prime is 1001221999. The next prime is 1001222017. The reversal of 1001222004 is 4002221001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7202967 + ... + 7203105.

Almost surely, 2^1001222004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001222004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1309342720).

1001222004 is an abundant number, since it is smaller than the sum of its proper divisors (1617463436).

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

1001222004 is a wasteful number, since it uses less digits than its factorization.

1001222004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1001222004 is about 31642.0922822749. The cubic root of 1001222004 is about 1000.4071688577.

Adding to 1001222004 its reverse (4002221001), we get a palindrome (5003443005).

The spelling of 1001222004 in words is "one billion, one million, two hundred twenty-two thousand, four".