2141005221 has 6 divisors (see below), whose sum is σ = 3092563110. Its totient is φ = 1427336808.

The previous prime is 2141005201. The next prime is 2141005231. The reversal of 2141005221 is 1225001412.

2141005221 is a `hidden beast` number, since 2 + 141 + 0 + 0 + 522 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1818084321 + 322920900 = 42639^2 + 17970^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2141005221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2141005194 and 2141005203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2141005201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118944726 + ... + 118944743.

It is an arithmetic number, because the mean of its divisors is an integer number (515427185).

Almost surely, 2^2141005221 is an apocalyptic number.

It is an amenable number.

2141005221 is a deficient number, since it is larger than the sum of its proper divisors (951557889).

2141005221 is a wasteful number, since it uses less digits than its factorization.

2141005221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237889475 (or 237889472 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2141005221 is about 46270.9976227010. The cubic root of 2141005221 is about 1288.8604846068.

Adding to 2141005221 its reverse (1225001412), we get a palindrome (3366006633).

The spelling of 2141005221 in words is "two billion, one hundred forty-one million, five thousand, two hundred twenty-one".