221201043 has 16 divisors (see below), whose sum is σ = 343948800. Its totient is φ = 126400008.

The previous prime is 221201041. The next prime is 221201047. The reversal of 221201043 is 340102122.

221201043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221201043 - 2¹ = 221201041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221201041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106455 + ... + 108512.

It is an arithmetic number, because the mean of its divisors is an integer number (21496800).

Almost surely, 2^221201043 is an apocalyptic number.

221201043 is a deficient number, since it is larger than the sum of its proper divisors (122747757).

221201043 is an equidigital number, since it uses as much as digits as its factorization.

221201043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214991 (or 214977 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221201043 is about 14872.8290180450. The cubic root of 221201043 is about 604.7776365616. Note that the first 3 decimals are identical.

Adding to 221201043 its reverse (340102122), we get a palindrome (561303165).

The spelling of 221201043 in words is "two hundred twenty-one million, two hundred one thousand, forty-three".