21202002001002 has 48 divisors (see below), whose sum is σ = 44769655923552. Its totient is φ = 6692915567520.

The previous prime is 21202002001001. The next prime is 21202002001009. The reversal of 21202002001002 is 20010020020212.

It is not an unprimeable number, because it can be changed into a prime (21202002001001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4123228 + ... + 7707464.

It is an arithmetic number, because the mean of its divisors is an integer number (932701165074).

Almost surely, 2^{21202002001002} is an apocalyptic number.

21202002001002 is an abundant number, since it is smaller than the sum of its proper divisors (23567653922550).

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

21202002001002 is a wasteful number, since it uses less digits than its factorization.

21202002001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587011 (or 3586992 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21202002001002 its reverse (20010020020212), we get a palindrome (41212022021214).

The spelling of 21202002001002 in words is "twenty-one trillion, two hundred two billion, two million, one thousand, two".