221221141 has 8 divisors (see below), whose sum is σ = 224532000. Its totient is φ = 217935120.

The previous prime is 221221127. The next prime is 221221213. The reversal of 221221141 is 141122122.

221221141 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 221221141 - 2²³ = 212832533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221821141) 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, 12135 + ... + 24283.

It is an arithmetic number, because the mean of its divisors is an integer number (28066500).

Almost surely, 2^221221141 is an apocalyptic number.

It is an amenable number.

221221141 is a deficient number, since it is larger than the sum of its proper divisors (3310859).

221221141 is a wasteful number, since it uses less digits than its factorization.

221221141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12419.

The product of its digits is 64, while the sum is 16.

The square root of 221221141 is about 14873.5046643352. The cubic root of 221221141 is about 604.7959524078.

Adding to 221221141 its reverse (141122122), we get a palindrome (362343263).

The spelling of 221221141 in words is "two hundred twenty-one million, two hundred twenty-one thousand, one hundred forty-one".