1002221120 has 56 divisors (see below), whose sum is σ = 2512161600. Its totient is φ = 379786752.

The previous prime is 1002221119. The next prime is 1002221137. The reversal of 1002221120 is 211222001.

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, 76340 + ... + 88499.

Almost surely, 2^1002221120 is an apocalyptic number.

1002221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002221120 is an abundant number, since it is smaller than the sum of its proper divisors (1509940480).

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

1002221120 is a wasteful number, since it uses less digits than its factorization.

1002221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164875 (or 164865 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1002221120 is about 31657.8761132202. The cubic root of 1002221120 is about 1000.7398258561.

Adding to 1002221120 its reverse (211222001), we get a palindrome (1213443121).

The spelling of 1002221120 in words is "one billion, two million, two hundred twenty-one thousand, one hundred twenty".