21220200302 has 16 divisors (see below), whose sum is σ = 36392745312. Its totient is φ = 9090556800.

The previous prime is 21220200289. The next prime is 21220200317. The reversal of 21220200302 is 20300202212.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283199 + ... + 350202.

It is an arithmetic number, because the mean of its divisors is an integer number (2274546582).

Almost surely, 2^21220200302 is an apocalyptic number.

21220200302 is a deficient number, since it is larger than the sum of its proper divisors (15172545010).

21220200302 is a wasteful number, since it uses less digits than its factorization.

21220200302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635803.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 21220200302 its reverse (20300202212), we get a palindrome (41520402514).

The spelling of 21220200302 in words is "twenty-one billion, two hundred twenty million, two hundred thousand, three hundred two".