121030321223 has 16 divisors (see below), whose sum is σ = 139067565120. Its totient is φ = 103180953600.

The previous prime is 121030321213. The next prime is 121030321253. The reversal of 121030321223 is 322123030121.

It is a cyclic number.

It is not a de Polignac number, because 121030321223 - 2¹⁰ = 121030320199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121030321195 and 121030321204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030321213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320443 + ... + 1409123.

It is an arithmetic number, because the mean of its divisors is an integer number (8691722820).

Almost surely, 2^121030321223 is an apocalyptic number.

121030321223 is a deficient number, since it is larger than the sum of its proper divisors (18037243897).

121030321223 is an equidigital number, since it uses as much as digits as its factorization.

121030321223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89738.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121030321223 its reverse (322123030121), we get a palindrome (443153351344).

The spelling of 121030321223 in words is "one hundred twenty-one billion, thirty million, three hundred twenty-one thousand, two hundred twenty-three".