21301230231222 has 32 divisors (see below), whose sum is σ = 42746771526912. Its totient is φ = 7076394378144.

The previous prime is 21301230231217. The next prime is 21301230231247. The reversal of 21301230231222 is 22213203210312.

It is a super-2 number, since 2×21301230231222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21301230231192 and 21301230231201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2159833 + ... + 6875124.

It is an arithmetic number, because the mean of its divisors is an integer number (1335836610216).

Almost surely, 2^{21301230231222} is an apocalyptic number.

21301230231222 is an abundant number, since it is smaller than the sum of its proper divisors (21445541295690).

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

21301230231222 is a wasteful number, since it uses less digits than its factorization.

21301230231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9036292.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21301230231222 its reverse (22213203210312), we get a palindrome (43514433441534).

The spelling of 21301230231222 in words is "twenty-one trillion, three hundred one billion, two hundred thirty million, two hundred thirty-one thousand, two hundred twenty-two".