1213123023301 has 4 divisors (see below), whose sum is σ = 1386426312352. Its totient is φ = 1039819734252.

The previous prime is 1213123023271. The next prime is 1213123023313. The reversal of 1213123023301 is 1033203213121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1213123023301 - 2¹³ = 1213123015109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213123023341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86651644515 + ... + 86651644528.

It is an arithmetic number, because the mean of its divisors is an integer number (346606578088).

Almost surely, 2^{1213123023301} is an apocalyptic number.

It is an amenable number.

1213123023301 is a deficient number, since it is larger than the sum of its proper divisors (173303289051).

1213123023301 is an equidigital number, since it uses as much as digits as its factorization.

1213123023301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173303289050.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1213123023301 its reverse (1033203213121), we get a palindrome (2246326236422).

The spelling of 1213123023301 in words is "one trillion, two hundred thirteen billion, one hundred twenty-three million, twenty-three thousand, three hundred one".