1023120123321 has 8 divisors (see below), whose sum is σ = 1369468181664. Its totient is φ = 679426073600.

The previous prime is 1023120123299. The next prime is 1023120123331. The reversal of 1023120123321 is 1233210213201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1023120123321 - 2¹⁷ = 1023119992249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1023120123331) 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 7 ways as a sum of consecutive naturals, for example, 663501255 + ... + 663502796.

It is an arithmetic number, because the mean of its divisors is an integer number (171183522708).

Almost surely, 2^{1023120123321} is an apocalyptic number.

It is an amenable number.

1023120123321 is a deficient number, since it is larger than the sum of its proper divisors (346348058343).

1023120123321 is a wasteful number, since it uses less digits than its factorization.

1023120123321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327004311.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1023120123321 its reverse (1233210213201), we get a palindrome (2256330336522).

The spelling of 1023120123321 in words is "one trillion, twenty-three billion, one hundred twenty million, one hundred twenty-three thousand, three hundred twenty-one".