2121320331002 has 8 divisors (see below), whose sum is σ = 3190511276436. Its totient is φ = 1057816572192.

The previous prime is 2121320331001. The next prime is 2121320331023. The reversal of 2121320331002 is 2001330231212.

It can be written as a sum of positive squares in 2 ways, for example, as 1861098936841 + 260221394161 = 1364221^2 + 510119^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2121320331001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421795723 + ... + 1421797214.

Almost surely, 2^{2121320331002} is an apocalyptic number.

2121320331002 is a deficient number, since it is larger than the sum of its proper divisors (1069190945434).

2121320331002 is a wasteful number, since it uses less digits than its factorization.

2121320331002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843593312.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2121320331002 its reverse (2001330231212), we get a palindrome (4122650562214).

The spelling of 2121320331002 in words is "two trillion, one hundred twenty-one billion, three hundred twenty million, three hundred thirty-one thousand, two".