2231210123 has 2 divisors, whose sum is σ = 2231210124. Its totient is φ = 2231210122.

The previous prime is 2231210087. The next prime is 2231210129. The reversal of 2231210123 is 3210121322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231210123 is a prime.

It is a super-3 number, since 3×2231210123³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2231210129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115605061 + 1115605062.

It is an arithmetic number, because the mean of its divisors is an integer number (1115605062).

Almost surely, 2^2231210123 is an apocalyptic number.

2231210123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231210123 is an equidigital number, since it uses as much as digits as its factorization.

2231210123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2231210123 is about 47235.6869644128. The cubic root of 2231210123 is about 1306.7128359089.

Adding to 2231210123 its reverse (3210121322), we get a palindrome (5441331445).

The spelling of 2231210123 in words is "two billion, two hundred thirty-one million, two hundred ten thousand, one hundred twenty-three".