21221312311132 has 48 divisors (see below), whose sum is σ = 37791530138880. Its totient is φ = 10424824928000.

The previous prime is 21221312311127. The next prime is 21221312311141. The reversal of 21221312311132 is 23111321312212.

It is a super-2 number, since 2×21221312311132² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21221312311097 and 21221312311106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115956363 + ... + 116139229.

It is an arithmetic number, because the mean of its divisors is an integer number (787323544560).

Almost surely, 2^{21221312311132} is an apocalyptic number.

It is an amenable number.

21221312311132 is a deficient number, since it is larger than the sum of its proper divisors (16570217827748).

21221312311132 is a wasteful number, since it uses less digits than its factorization.

21221312311132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184362 (or 184360 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 21221312311132 its reverse (23111321312212), we get a palindrome (44332633623344).

The spelling of 21221312311132 in words is "twenty-one trillion, two hundred twenty-one billion, three hundred twelve million, three hundred eleven thousand, one hundred thirty-two".