1002201012 has 72 divisors (see below), whose sum is σ = 2632777056. Its totient is φ = 333354528.

The previous prime is 1002200987. The next prime is 1002201041. The reversal of 1002201012 is 2101022001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1002200985 and 1002201003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 657283 + ... + 658805.

It is an arithmetic number, because the mean of its divisors is an integer number (36566348).

Almost surely, 2^1002201012 is an apocalyptic number.

1002201012 is a gapful number since it is divisible by the number (12) 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 1002201012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316388528).

1002201012 is an abundant number, since it is smaller than the sum of its proper divisors (1630576044).

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

1002201012 is a wasteful number, since it uses less digits than its factorization.

1002201012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219 (or 2205 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1002201012 is about 31657.5585287305. The cubic root of 1002201012 is about 1000.7331330512.

Adding to 1002201012 its reverse (2101022001), we get a palindrome (3103223013).

The spelling of 1002201012 in words is "one billion, two million, two hundred one thousand, twelve".