21202004152 has 64 divisors (see below), whose sum is σ = 46710892800. Its totient is φ = 8832983040.

The previous prime is 21202004123. The next prime is 21202004191. The reversal of 21202004152 is 25140020212.

It is a super-2 number, since 2×21202004152² (a number of 21 digits) contains 22 as substring.

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, 487224 + ... + 528952.

It is an arithmetic number, because the mean of its divisors is an integer number (729857700).

Almost surely, 2^21202004152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21202004152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23355446400).

21202004152 is an abundant number, since it is smaller than the sum of its proper divisors (25508888648).

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

21202004152 is a wasteful number, since it uses less digits than its factorization.

21202004152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41996 (or 41992 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 21202004152 its reverse (25140020212), we get a palindrome (46342024364).

The spelling of 21202004152 in words is "twenty-one billion, two hundred two million, four thousand, one hundred fifty-two".