2121113132231 has 8 divisors (see below), whose sum is σ = 2213356015104. Its totient is φ = 2028871963800.

The previous prime is 2121113132227. The next prime is 2121113132233. The reversal of 2121113132231 is 1322313111212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2121113132231 - 2² = 2121113132227 is a prime.

It is a super-3 number, since 3×2121113132231³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121113132197 and 2121113132206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121113132233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2535950 + ... + 3266996.

It is an arithmetic number, because the mean of its divisors is an integer number (276669501888).

Almost surely, 2^{2121113132231} is an apocalyptic number.

2121113132231 is a deficient number, since it is larger than the sum of its proper divisors (92242882873).

2121113132231 is a wasteful number, since it uses less digits than its factorization.

2121113132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857221.

The product of its digits is 432, while the sum is 23.

Adding to 2121113132231 its reverse (1322313111212), we get a palindrome (3443426243443).

The spelling of 2121113132231 in words is "two trillion, one hundred twenty-one billion, one hundred thirteen million, one hundred thirty-two thousand, two hundred thirty-one".