2121110302231 has 8 divisors (see below), whose sum is σ = 2125487241360. Its totient is φ = 2116735961088.

The previous prime is 2121110302177. The next prime is 2121110302277. The reversal of 2121110302231 is 1322030111212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121110302231 is a prime.

It is a super-2 number, since 2×2121110302231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121110302199 and 2121110302208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121110302931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989335 + ... + 2284951.

It is an arithmetic number, because the mean of its divisors is an integer number (265685905170).

Almost surely, 2^{2121110302231} is an apocalyptic number.

2121110302231 is a deficient number, since it is larger than the sum of its proper divisors (4376939129).

2121110302231 is a wasteful number, since it uses less digits than its factorization.

2121110302231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298993.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2121110302231 its reverse (1322030111212), we get a palindrome (3443140413443).

The spelling of 2121110302231 in words is "two trillion, one hundred twenty-one billion, one hundred ten million, three hundred two thousand, two hundred thirty-one".