1002222500 has 60 divisors (see below), whose sum is σ = 2242869552. Its totient is φ = 391524000.

The previous prime is 1002222499. The next prime is 1002222509. The reversal of 1002222500 is 52222001.

It is not an unprimeable number, because it can be changed into a prime (1002222509) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 102839 + ... + 112161.

Almost surely, 2^1002222500 is an apocalyptic number.

1002222500 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 1002222500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1121434776).

1002222500 is an abundant number, since it is smaller than the sum of its proper divisors (1240647052).

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

1002222500 is an equidigital number, since it uses as much as digits as its factorization.

1002222500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9390 (or 9373 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 1002222500 is about 31657.8979087368. The cubic root of 1002222500 is about 1000.7402851760.

Adding to 1002222500 its reverse (52222001), we get a palindrome (1054444501).

The spelling of 1002222500 in words is "one billion, two million, two hundred twenty-two thousand, five hundred".