121101223123 has 8 divisors (see below), whose sum is σ = 122568698448. Its totient is φ = 119633948544.

The previous prime is 121101223121. The next prime is 121101223141. The reversal of 121101223123 is 321322101121.

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 121101223123 - 2¹ = 121101223121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121101223123.

It is not an unprimeable number, because it can be changed into a prime (121101223121) 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, 1424215 + ... + 1506847.

It is an arithmetic number, because the mean of its divisors is an integer number (15321087306).

Almost surely, 2^121101223123 is an apocalyptic number.

121101223123 is a deficient number, since it is larger than the sum of its proper divisors (1467475325).

121101223123 is an equidigital number, since it uses as much as digits as its factorization.

121101223123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100373.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121101223123 its reverse (321322101121), we get a palindrome (442423324244).

The spelling of 121101223123 in words is "one hundred twenty-one billion, one hundred one million, two hundred twenty-three thousand, one hundred twenty-three".