21300021222 has 8 divisors (see below), whose sum is σ = 42600042456. Its totient is φ = 7100007072.

The previous prime is 21300021221. The next prime is 21300021283. The reversal of 21300021222 is 22212000312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

21300021222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300021221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1775001763 + ... + 1775001774.

It is an arithmetic number, because the mean of its divisors is an integer number (5325005307).

Almost surely, 2^21300021222 is an apocalyptic number.

21300021222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21300021222 is a wasteful number, since it uses less digits than its factorization.

21300021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550003542.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21300021222 its reverse (22212000312), we get a palindrome (43512021534).

The spelling of 21300021222 in words is "twenty-one billion, three hundred million, twenty-one thousand, two hundred twenty-two".