1213000321023 has 24 divisors (see below), whose sum is σ = 1766522279808. Its totient is φ = 802042882512.

The previous prime is 1213000321007. The next prime is 1213000321051. The reversal of 1213000321023 is 3201230003121.

1213000321023 is a `hidden beast` number, since 1 + 21 + 300 + 0 + 321 + 0 + 23 = 666.

It is not a de Polignac number, because 1213000321023 - 2⁴ = 1213000321007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213000320987 and 1213000321005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213000321123) 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 23 ways as a sum of consecutive naturals, for example, 591465 + ... + 1666082.

It is an arithmetic number, because the mean of its divisors is an integer number (73605094992).

Almost surely, 2^{1213000321023} is an apocalyptic number.

1213000321023 is a deficient number, since it is larger than the sum of its proper divisors (553521958785).

1213000321023 is a wasteful number, since it uses less digits than its factorization.

1213000321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258043 (or 2258040 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1213000321023 its reverse (3201230003121), we get a palindrome (4414230324144).

The spelling of 1213000321023 in words is "one trillion, two hundred thirteen billion, three hundred twenty-one thousand, twenty-three".