121223043 has 12 divisors (see below), whose sum is σ = 177971248. Its totient is φ = 79490160.

The previous prime is 121223029. The next prime is 121223071. The reversal of 121223043 is 340322121.

It is not a de Polignac number, because 121223043 - 2⁴ = 121223027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121223083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109855 + ... + 110952.

Almost surely, 2^121223043 is an apocalyptic number.

121223043 is a deficient number, since it is larger than the sum of its proper divisors (56748205).

121223043 is a wasteful number, since it uses less digits than its factorization.

121223043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220874 (or 220871 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 121223043 is about 11010.1336504150. The cubic root of 121223043 is about 494.9124669218.

Adding to 121223043 its reverse (340322121), we get a palindrome (461545164).

The spelling of 121223043 in words is "one hundred twenty-one million, two hundred twenty-three thousand, forty-three".