221207043 has 8 divisors (see below), whose sum is σ = 312292368. Its totient is φ = 138796544.

The previous prime is 221207033. The next prime is 221207057. The reversal of 221207043 is 340702122.

221207043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221207043 - 2⁴ = 221207027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221207033) 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, 2168646 + ... + 2168747.

It is an arithmetic number, because the mean of its divisors is an integer number (39036546).

Almost surely, 2^221207043 is an apocalyptic number.

221207043 is a deficient number, since it is larger than the sum of its proper divisors (91085325).

221207043 is a wasteful number, since it uses less digits than its factorization.

221207043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4337413.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 221207043 is about 14873.0307267887. The cubic root of 221207043 is about 604.7831046386.

Adding to 221207043 its reverse (340702122), we get a palindrome (561909165).

The spelling of 221207043 in words is "two hundred twenty-one million, two hundred seven thousand, forty-three".