1210201030123 has 4 divisors (see below), whose sum is σ = 1210268933800. Its totient is φ = 1210133126448.

The previous prime is 1210201030061. The next prime is 1210201030133. The reversal of 1210201030123 is 3210301020121.

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 1210201030123 - 2¹⁷ = 1210200899051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210201030097 and 1210201030106.

It is not an unprimeable number, because it can be changed into a prime (1210201030133) 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, 33925098 + ... + 33960751.

It is an arithmetic number, because the mean of its divisors is an integer number (302567233450).

Almost surely, 2^{1210201030123} is an apocalyptic number.

1210201030123 is a deficient number, since it is larger than the sum of its proper divisors (67903677).

1210201030123 is an equidigital number, since it uses as much as digits as its factorization.

1210201030123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67903676.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1210201030123 its reverse (3210301020121), we get a palindrome (4420502050244).

The spelling of 1210201030123 in words is "one trillion, two hundred ten billion, two hundred one million, thirty thousand, one hundred twenty-three".