20021003002 has 96 divisors (see below), whose sum is σ = 41110917120. Its totient is φ = 7188289920.

The previous prime is 20021002987. The next prime is 20021003033. The reversal of 20021003002 is 20030012002.

It is a super-2 number, since 2×20021003002² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20021003002.

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, 15652999 + ... + 15654277.

It is an arithmetic number, because the mean of its divisors is an integer number (428238720).

Almost surely, 2^20021003002 is an apocalyptic number.

20021003002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20021003002 is an abundant number, since it is smaller than the sum of its proper divisors (21089914118).

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

20021003002 is a wasteful number, since it uses less digits than its factorization.

20021003002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20021003002 its reverse (20030012002), we get a palindrome (40051015004).

The spelling of 20021003002 in words is "twenty billion, twenty-one million, three thousand, two".