21300231222 has 12 divisors (see below), whose sum is σ = 46150501020. Its totient is φ = 7100077068.

The previous prime is 21300231217. The next prime is 21300231301. The reversal of 21300231222 is 22213200312.

21300231222 is a `hidden beast` number, since 213 + 0 + 0 + 231 + 222 = 666.

It is a super-2 number, since 2×21300231222² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1183346179 = 21300231222 / (2 + 1 + 3 + 0 + 0 + 2 + 3 + 1 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 21300231195 and 21300231204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 591673072 + ... + 591673107.

It is an arithmetic number, because the mean of its divisors is an integer number (3845875085).

Almost surely, 2^21300231222 is an apocalyptic number.

21300231222 is an abundant number, since it is smaller than the sum of its proper divisors (24850269798).

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

21300231222 is a wasteful number, since it uses less digits than its factorization.

21300231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183346187 (or 1183346184 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21300231222 its reverse (22213200312), we get a palindrome (43513431534).

The spelling of 21300231222 in words is "twenty-one billion, three hundred million, two hundred thirty-one thousand, two hundred twenty-two".