221413801 has 24 divisors (see below), whose sum is σ = 270273024. Its totient is φ = 180512640.

The previous prime is 221413799. The next prime is 221413813. The reversal of 221413801 is 108314122.

It is a happy number.

It is not a de Polignac number, because 221413801 - 2¹ = 221413799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221413901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 250881 + ... + 251761.

It is an arithmetic number, because the mean of its divisors is an integer number (11261376).

Almost surely, 2^221413801 is an apocalyptic number.

It is an amenable number.

221413801 is a deficient number, since it is larger than the sum of its proper divisors (48859223).

221413801 is a wasteful number, since it uses less digits than its factorization.

221413801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 221413801 is about 14879.9798722982. The cubic root of 221413801 is about 604.9714723702.

Adding to 221413801 its reverse (108314122), we get a palindrome (329727923).

The spelling of 221413801 in words is "two hundred twenty-one million, four hundred thirteen thousand, eight hundred one".