1213123311230 has 32 divisors (see below), whose sum is σ = 2191698432000. Its totient is φ = 483455119392.

The previous prime is 1213123311229. The next prime is 1213123311287. The reversal of 1213123311230 is 321133213121.

It is a super-3 number, since 3×1213123311230³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1213123311196 and 1213123311205.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18982871 + ... + 19046669.

It is an arithmetic number, because the mean of its divisors is an integer number (68490576000).

Almost surely, 2^{1213123311230} is an apocalyptic number.

1213123311230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213123311230 is a deficient number, since it is larger than the sum of its proper divisors (978575120770).

1213123311230 is a wasteful number, since it uses less digits than its factorization.

1213123311230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70808.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1213123311230 its reverse (321133213121), we get a palindrome (1534256524351).

The spelling of 1213123311230 in words is "one trillion, two hundred thirteen billion, one hundred twenty-three million, three hundred eleven thousand, two hundred thirty".