21320221202 has 16 divisors (see below), whose sum is σ = 36551219712. Its totient is φ = 9136670400.

The previous prime is 21320221193. The next prime is 21320221207. The reversal of 21320221202 is 20212202312.

It is not an unprimeable number, because it can be changed into a prime (21320221207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251327 + ... + 325277.

It is an arithmetic number, because the mean of its divisors is an integer number (2284451232).

Almost surely, 2^21320221202 is an apocalyptic number.

21320221202 is a deficient number, since it is larger than the sum of its proper divisors (15230998510).

21320221202 is a wasteful number, since it uses less digits than its factorization.

21320221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94553.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21320221202 its reverse (20212202312), we get a palindrome (41532423514).

The spelling of 21320221202 in words is "twenty-one billion, three hundred twenty million, two hundred twenty-one thousand, two hundred two".