1002222320 has 80 divisors (see below), whose sum is σ = 2547024480. Its totient is φ = 363724800.

The previous prime is 1002222311. The next prime is 1002222337. The reversal of 1002222320 is 232222001.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1002222295 and 1002222304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675980 + ... + 677460.

It is an arithmetic number, because the mean of its divisors is an integer number (31837806).

Almost surely, 2^1002222320 is an apocalyptic number.

1002222320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002222320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1273512240).

1002222320 is an abundant number, since it is smaller than the sum of its proper divisors (1544802160).

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

1002222320 is a wasteful number, since it uses less digits than its factorization.

1002222320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2274 (or 2268 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1002222320 is about 31657.8950658442. The cubic root of 1002222320 is about 1000.7402252647.

Adding to 1002222320 its reverse (232222001), we get a palindrome (1234444321).

It can be divided in two parts, 1002 and 222320, that added together give a palindrome (223322).

The spelling of 1002222320 in words is "one billion, two million, two hundred twenty-two thousand, three hundred twenty".