21302200120 has 16 divisors (see below), whose sum is σ = 47929950360. Its totient is φ = 8520880032.

The previous prime is 21302200091. The next prime is 21302200133. The reversal of 21302200120 is 2100220312.

It is a self number, because there is not a number n which added to its sum of digits gives 21302200120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266277462 + ... + 266277541.

Almost surely, 2^21302200120 is an apocalyptic number.

21302200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302200120 is an abundant number, since it is smaller than the sum of its proper divisors (26627750240).

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

21302200120 is a wasteful number, since it uses less digits than its factorization.

21302200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532555014 (or 532555010 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21302200120 its reverse (2100220312), we get a palindrome (23402420432).

The spelling of 21302200120 in words is "twenty-one billion, three hundred two million, two hundred thousand, one hundred twenty".