2121103221331 has 16 divisors (see below), whose sum is σ = 2280489292800. Its totient is φ = 1966501205568.

The previous prime is 2121103221299. The next prime is 2121103221371. The reversal of 2121103221331 is 1331223011212.

It is a cyclic number.

It is not a de Polignac number, because 2121103221331 - 2⁵ = 2121103221299 is a prime.

It is a super-2 number, since 2×2121103221331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121103221371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8556871 + ... + 8801263.

It is an arithmetic number, because the mean of its divisors is an integer number (142530580800).

Almost surely, 2^{2121103221331} is an apocalyptic number.

2121103221331 is a deficient number, since it is larger than the sum of its proper divisors (159386071469).

2121103221331 is a wasteful number, since it uses less digits than its factorization.

2121103221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254178.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2121103221331 its reverse (1331223011212), we get a palindrome (3452326232543).

The spelling of 2121103221331 in words is "two trillion, one hundred twenty-one billion, one hundred three million, two hundred twenty-one thousand, three hundred thirty-one".