121123121221223 has 8 divisors (see below), whose sum is σ = 132148227442320. Its totient is φ = 110100333897280.

The previous prime is 121123121221213. The next prime is 121123121221229. The reversal of 121123121221223 is 322122121321121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121123121221223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121123121221192 and 121123121221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123121221229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579615068 + ... + 579824001.

It is an arithmetic number, because the mean of its divisors is an integer number (16518528430290).

Almost surely, 2^{121123121221223} is an apocalyptic number.

121123121221223 is a deficient number, since it is larger than the sum of its proper divisors (11025106221097).

121123121221223 is a wasteful number, since it uses less digits than its factorization.

121123121221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159448577.

The product of its digits is 1152, while the sum is 26.

Adding to 121123121221223 its reverse (322122121321121), we get a palindrome (443245242542344).

The spelling of 121123121221223 in words is "one hundred twenty-one trillion, one hundred twenty-three billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-three".