121210043 has 4 divisors (see below), whose sum is σ = 121360680. Its totient is φ = 121059408.

The previous prime is 121210027. The next prime is 121210049. The reversal of 121210043 is 340012121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340012121 = 17 ⋅20000713.

It is a cyclic number.

It is not a de Polignac number, because 121210043 - 2⁴ = 121210027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121210049) 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, 74105 + ... + 75722.

It is an arithmetic number, because the mean of its divisors is an integer number (30340170).

Almost surely, 2^121210043 is an apocalyptic number.

121210043 is a deficient number, since it is larger than the sum of its proper divisors (150637).

121210043 is an equidigital number, since it uses as much as digits as its factorization.

121210043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150636.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121210043 is about 11009.5432693641. The cubic root of 121210043 is about 494.8947747627.

Adding to 121210043 its reverse (340012121), we get a palindrome (461222164).

The spelling of 121210043 in words is "one hundred twenty-one million, two hundred ten thousand, forty-three".