221402113 has 8 divisors (see below), whose sum is σ = 223198848. Its totient is φ = 219611664.

The previous prime is 221402107. The next prime is 221402131. The reversal of 221402113 is 311204122.

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 221402113 - 2⁹ = 221401601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221402513) 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, 89256 + ... + 91702.

It is an arithmetic number, because the mean of its divisors is an integer number (27899856).

Almost surely, 2^221402113 is an apocalyptic number.

It is an amenable number.

221402113 is a deficient number, since it is larger than the sum of its proper divisors (1796735).

221402113 is a wasteful number, since it uses less digits than its factorization.

221402113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 221402113 is about 14879.5871246483. The cubic root of 221402113 is about 604.9608270973.

Adding to 221402113 its reverse (311204122), we get a palindrome (532606235).

The spelling of 221402113 in words is "two hundred twenty-one million, four hundred two thousand, one hundred thirteen".