1210230111321 has 48 divisors (see below), whose sum is σ = 2195370672768. Its totient is φ = 624101932800.

The previous prime is 1210230111319. The next prime is 1210230111329. The reversal of 1210230111321 is 1231110320121.

1210230111321 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 230 + 111 + 321 = 666.

It is not a de Polignac number, because 1210230111321 - 2¹ = 1210230111319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210230111294 and 1210230111303.

It is not an unprimeable number, because it can be changed into a prime (1210230111329) 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 47 ways as a sum of consecutive naturals, for example, 6278650 + ... + 6468531.

It is an arithmetic number, because the mean of its divisors is an integer number (45736889016).

Almost surely, 2^{1210230111321} is an apocalyptic number.

1210230111321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210230111321 is a deficient number, since it is larger than the sum of its proper divisors (985140561447).

1210230111321 is a wasteful number, since it uses less digits than its factorization.

1210230111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12747342 (or 12747339 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1210230111321 its reverse (1231110320121), we get a palindrome (2441340431442).

The spelling of 1210230111321 in words is "one trillion, two hundred ten billion, two hundred thirty million, one hundred eleven thousand, three hundred twenty-one".