1210012231231 has 4 divisors (see below), whose sum is σ = 1214380506712. Its totient is φ = 1205643955752.

The previous prime is 1210012231223. The next prime is 1210012231273. The reversal of 1210012231231 is 1321322100121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1210012231231 - 2³ = 1210012231223 is a prime.

It is a super-2 number, since 2×1210012231231² (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 = 1210012231199 and 1210012231208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210012231201) 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 3 ways as a sum of consecutive naturals, for example, 2184137325 + ... + 2184137878.

It is an arithmetic number, because the mean of its divisors is an integer number (303595126678).

Almost surely, 2^{1210012231231} is an apocalyptic number.

1210012231231 is a deficient number, since it is larger than the sum of its proper divisors (4368275481).

1210012231231 is an equidigital number, since it uses as much as digits as its factorization.

1210012231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368275480.

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

Adding to 1210012231231 its reverse (1321322100121), we get a palindrome (2531334331352).

The spelling of 1210012231231 in words is "one trillion, two hundred ten billion, twelve million, two hundred thirty-one thousand, two hundred thirty-one".