1221123310323 has 8 divisors (see below), whose sum is σ = 1860759330048. Its totient is φ = 697784748744.

The previous prime is 1221123310289. The next prime is 1221123310357. The reversal of 1221123310323 is 3230133211221.

It is an interprime number because it is at equal distance from previous prime (1221123310289) and next prime (1221123310357).

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

It is not a de Polignac number, because 1221123310323 - 2²⁹ = 1220586439411 is a prime.

It is a super-2 number, since 2×1221123310323² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221123310293 and 1221123310302.

It is not an unprimeable number, because it can be changed into a prime (1221123300323) 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 7 ways as a sum of consecutive naturals, for example, 29074364511 + ... + 29074364552.

It is an arithmetic number, because the mean of its divisors is an integer number (232594916256).

Almost surely, 2^{1221123310323} is an apocalyptic number.

1221123310323 is a deficient number, since it is larger than the sum of its proper divisors (639636019725).

1221123310323 is an equidigital number, since it uses as much as digits as its factorization.

1221123310323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58148729073.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1221123310323 its reverse (3230133211221), we get a palindrome (4451256521544).

The spelling of 1221123310323 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-three million, three hundred ten thousand, three hundred twenty-three".