21223110312132 has 48 divisors (see below), whose sum is σ = 50577730318080. Its totient is φ = 6923371055872.

The previous prime is 21223110312127. The next prime is 21223110312133. The reversal of 21223110312132 is 23121301132212.

It is a super-2 number, since 2×21223110312132² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21223110312133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6873238 + ... + 9470354.

It is an arithmetic number, because the mean of its divisors is an integer number (1053702714960).

Almost surely, 2^{21223110312132} is an apocalyptic number.

It is an amenable number.

21223110312132 is an abundant number, since it is smaller than the sum of its proper divisors (29354620005948).

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

21223110312132 is a wasteful number, since it uses less digits than its factorization.

21223110312132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611660 (or 2611658 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 21223110312132 its reverse (23121301132212), we get a palindrome (44344411444344).

The spelling of 21223110312132 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred ten million, three hundred twelve thousand, one hundred thirty-two".