1213202333423 has 16 divisors (see below), whose sum is σ = 1242879352416. Its totient is φ = 1183870688640.

The previous prime is 1213202333383. The next prime is 1213202333437. The reversal of 1213202333423 is 3243332023121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1213202333423 - 2⁶ = 1213202333359 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 (1213202333323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4805165 + ... + 5051337.

It is an arithmetic number, because the mean of its divisors is an integer number (77679959526).

Almost surely, 2^{1213202333423} is an apocalyptic number.

1213202333423 is a deficient number, since it is larger than the sum of its proper divisors (29677018993).

1213202333423 is a wasteful number, since it uses less digits than its factorization.

1213202333423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246874.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 1213202333423 its reverse (3243332023121), we get a palindrome (4456534356544).

The spelling of 1213202333423 in words is "one trillion, two hundred thirteen billion, two hundred two million, three hundred thirty-three thousand, four hundred twenty-three".