21303210111222 has 32 divisors (see below), whose sum is σ = 45884202442848. Its totient is φ = 6554781697536.

The previous prime is 21303210111137. The next prime is 21303210111241. The reversal of 21303210111222 is 22211101230312.

It is a super-2 number, since 2×21303210111222² (a number of 27 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 9420318 + ... + 11460750.

It is an arithmetic number, because the mean of its divisors is an integer number (1433881326339).

Almost surely, 2^{21303210111222} is an apocalyptic number.

21303210111222 is an abundant number, since it is smaller than the sum of its proper divisors (24580992331626).

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

21303210111222 is a wasteful number, since it uses less digits than its factorization.

21303210111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174304.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21303210111222 its reverse (22211101230312), we get a palindrome (43514311341534).

The spelling of 21303210111222 in words is "twenty-one trillion, three hundred three billion, two hundred ten million, one hundred eleven thousand, two hundred twenty-two".