121122001223 has 4 divisors (see below), whose sum is σ = 121194661560. Its totient is φ = 121049340888.

The previous prime is 121122001219. The next prime is 121122001277. The reversal of 121122001223 is 322100221121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322100221121 = 7 ⋅46014317303.

It is a cyclic number.

It is not a de Polignac number, because 121122001223 - 2² = 121122001219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122001283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36327668 + ... + 36331001.

It is an arithmetic number, because the mean of its divisors is an integer number (30298665390).

Almost surely, 2^121122001223 is an apocalyptic number.

121122001223 is a deficient number, since it is larger than the sum of its proper divisors (72660337).

121122001223 is an equidigital number, since it uses as much as digits as its factorization.

121122001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72660336.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121122001223 its reverse (322100221121), we get a palindrome (443222222344).

The spelling of 121122001223 in words is "one hundred twenty-one billion, one hundred twenty-two million, one thousand, two hundred twenty-three".