2121111323303 has 16 divisors (see below), whose sum is σ = 2517308903424. Its totient is φ = 1748911538880.

The previous prime is 2121111323297. The next prime is 2121111323351. The reversal of 2121111323303 is 3033231111212.

It is a cyclic number.

It is not a de Polignac number, because 2121111323303 - 2²⁶ = 2121044214439 is a prime.

It is a super-2 number, since 2×2121111323303² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121111323393) 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, 29229350 + ... + 29301827.

It is an arithmetic number, because the mean of its divisors is an integer number (157331806464).

Almost surely, 2^{2121111323303} is an apocalyptic number.

2121111323303 is a deficient number, since it is larger than the sum of its proper divisors (396197580121).

2121111323303 is a wasteful number, since it uses less digits than its factorization.

2121111323303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58531382.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2121111323303 its reverse (3033231111212), we get a palindrome (5154342434515).

The spelling of 2121111323303 in words is "two trillion, one hundred twenty-one billion, one hundred eleven million, three hundred twenty-three thousand, three hundred three".