21212131311322 has 8 divisors (see below), whose sum is σ = 36363653676576. Its totient is φ = 9090913419132.

The previous prime is 21212131311313. The next prime is 21212131311367. The reversal of 21212131311322 is 22311313121212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757576118248 + ... + 757576118275.

It is an arithmetic number, because the mean of its divisors is an integer number (4545456709572).

Almost surely, 2^{21212131311322} is an apocalyptic number.

21212131311322 is a deficient number, since it is larger than the sum of its proper divisors (15151522365254).

21212131311322 is a wasteful number, since it uses less digits than its factorization.

21212131311322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515152236532.

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

Adding to 21212131311322 its reverse (22311313121212), we get a palindrome (43523444432534).

The spelling of 21212131311322 in words is "twenty-one trillion, two hundred twelve billion, one hundred thirty-one million, three hundred eleven thousand, three hundred twenty-two".