121213023223 has 4 divisors (see below), whose sum is σ = 121336333488. Its totient is φ = 121089712960.

The previous prime is 121213023221. The next prime is 121213023247. The reversal of 121213023223 is 322320312121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121213023223 - 2¹ = 121213023221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121213023194 and 121213023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121213023221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61653658 + ... + 61655623.

It is an arithmetic number, because the mean of its divisors is an integer number (30334083372).

Almost surely, 2^121213023223 is an apocalyptic number.

121213023223 is a deficient number, since it is larger than the sum of its proper divisors (123310265).

121213023223 is an equidigital number, since it uses as much as digits as its factorization.

121213023223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123310264.

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

Adding to 121213023223 its reverse (322320312121), we get a palindrome (443533335344).

The spelling of 121213023223 in words is "one hundred twenty-one billion, two hundred thirteen million, twenty-three thousand, two hundred twenty-three".