221402141 has 8 divisors (see below), whose sum is σ = 226796064. Its totient is φ = 216019440.

The previous prime is 221402131. The next prime is 221402149. The reversal of 221402141 is 141204122.

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 221402141 - 2¹⁴ = 221385757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221402149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48155 + ... + 52551.

It is an arithmetic number, because the mean of its divisors is an integer number (28349508).

Almost surely, 2^221402141 is an apocalyptic number.

It is an amenable number.

221402141 is a deficient number, since it is larger than the sum of its proper divisors (5393923).

221402141 is a wasteful number, since it uses less digits than its factorization.

221402141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 221402141 is about 14879.5880655346. The cubic root of 221402141 is about 604.9608525998.

Adding to 221402141 its reverse (141204122), we get a palindrome (362606263).

The spelling of 221402141 in words is "two hundred twenty-one million, four hundred two thousand, one hundred forty-one".