2121123313323 has 48 divisors (see below), whose sum is σ = 3568851389376. Its totient is φ = 1188785295360.

The previous prime is 2121123313291. The next prime is 2121123313327. The reversal of 2121123313323 is 3233133211212.

2121123313323 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 1 + 2 + 331 + 3 + 323 = 666.

It is not a de Polignac number, because 2121123313323 - 2⁵ = 2121123313291 is a prime.

It is a super-2 number, since 2×2121123313323² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121123313327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9563443 + ... + 9782723.

It is an arithmetic number, because the mean of its divisors is an integer number (74351070612).

Almost surely, 2^{2121123313323} is an apocalyptic number.

2121123313323 is a deficient number, since it is larger than the sum of its proper divisors (1447728076053).

2121123313323 is a wasteful number, since it uses less digits than its factorization.

2121123313323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222244 (or 222241 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 2121123313323 its reverse (3233133211212), we get a palindrome (5354256524535).

The spelling of 2121123313323 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-three million, three hundred thirteen thousand, three hundred twenty-three".