2121021021332 has 96 divisors (see below), whose sum is σ = 3935912148000. Its totient is φ = 998645760000.

The previous prime is 2121021021319. The next prime is 2121021021367. The reversal of 2121021021332 is 2331201201212.

It can be written as a sum of positive squares in 16 ways, for example, as 111981252496 + 2009039768836 = 334636^2 + 1417406^2 .

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 31 ways as a sum of consecutive naturals, for example, 1324809332 + ... + 1324810932.

It is an arithmetic number, because the mean of its divisors is an integer number (40999084875).

Almost surely, 2^{2121021021332} is an apocalyptic number.

It is an amenable number.

2121021021332 is a deficient number, since it is larger than the sum of its proper divisors (1814891126668).

2121021021332 is a wasteful number, since it uses less digits than its factorization.

2121021021332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357 (or 3355 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2121021021332 its reverse (2331201201212), we get a palindrome (4452222222544).

The spelling of 2121021021332 in words is "two trillion, one hundred twenty-one billion, twenty-one million, twenty-one thousand, three hundred thirty-two".