21021212311332 has 96 divisors (see below), whose sum is σ = 49900933993344. Its totient is φ = 6886170547200.

The previous prime is 21021212311331. The next prime is 21021212311453. The reversal of 21021212311332 is 23311321212012.

It is a super-2 number, since 2×21021212311332² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21021212311331) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 302746803 + ... + 302816229.

It is an arithmetic number, because the mean of its divisors is an integer number (519801395764).

Almost surely, 2^{21021212311332} is an apocalyptic number.

It is an amenable number.

21021212311332 is an abundant number, since it is smaller than the sum of its proper divisors (28879721682012).

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

21021212311332 is a wasteful number, since it uses less digits than its factorization.

21021212311332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70749 (or 70747 counting only the distinct ones).

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

Adding to 21021212311332 its reverse (23311321212012), we get a palindrome (44332533523344).

The spelling of 21021212311332 in words is "twenty-one trillion, twenty-one billion, two hundred twelve million, three hundred eleven thousand, three hundred thirty-two".