1210123121231 has 2 divisors, whose sum is σ = 1210123121232. Its totient is φ = 1210123121230.

The previous prime is 1210123121183. The next prime is 1210123121237. The reversal of 1210123121231 is 1321213210121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1210123121231 - 2⁶ = 1210123121167 is a prime.

It is a super-2 number, since 2×1210123121231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210123121237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605061560615 + 605061560616.

It is an arithmetic number, because the mean of its divisors is an integer number (605061560616).

Almost surely, 2^{1210123121231} is an apocalyptic number.

1210123121231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210123121231 is an equidigital number, since it uses as much as digits as its factorization.

1210123121231 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 20.

Adding to 1210123121231 its reverse (1321213210121), we get a palindrome (2531336331352).

The spelling of 1210123121231 in words is "one trillion, two hundred ten billion, one hundred twenty-three million, one hundred twenty-one thousand, two hundred thirty-one".