1223210323021 has 8 divisors (see below), whose sum is σ = 1319600926584. Its totient is φ = 1129534947840.

The previous prime is 1223210323001. The next prime is 1223210323061. The reversal of 1223210323021 is 1203230123221.

It can be written as a sum of positive squares in 4 ways, for example, as 598139826025 + 625070496996 = 773395^2 + 790614^2 .

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 1223210323021 - 2⁵ = 1223210322989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223210322983 and 1223210323001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223210323001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678806160 + ... + 678807961.

It is an arithmetic number, because the mean of its divisors is an integer number (164950115823).

Almost surely, 2^{1223210323021} is an apocalyptic number.

It is an amenable number.

1223210323021 is a deficient number, since it is larger than the sum of its proper divisors (96390603563).

1223210323021 is a wasteful number, since it uses less digits than its factorization.

1223210323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357614191.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1223210323021 its reverse (1203230123221), we get a palindrome (2426440446242).

The spelling of 1223210323021 in words is "one trillion, two hundred twenty-three billion, two hundred ten million, three hundred twenty-three thousand, twenty-one".