12220043 has 4 divisors (see below), whose sum is σ = 13330968. Its totient is φ = 11109120.

The previous prime is 12220037. The next prime is 12220081. The reversal of 12220043 is 34002221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34002221 = 11 ⋅3091111.

It is not a de Polignac number, because 12220043 - 2¹⁰ = 12219019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220003) 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, 555446 + ... + 555467.

It is an arithmetic number, because the mean of its divisors is an integer number (3332742).

Almost surely, 2^12220043 is an apocalyptic number.

12220043 is a deficient number, since it is larger than the sum of its proper divisors (1110925).

12220043 is a wasteful number, since it uses less digits than its factorization.

12220043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110924.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 12220043 is about 3495.7178089771. The cubic root of 12220043 is about 230.3337498704. Note that the first 3 decimals are identical.

Adding to 12220043 its reverse (34002221), we get a palindrome (46222264).

The spelling of 12220043 in words is "twelve million, two hundred twenty thousand, forty-three".