4001221141 has 4 divisors (see below), whose sum is σ = 4005880000. Its totient is φ = 3996562284.

The previous prime is 4001221139. The next prime is 4001221171. The reversal of 4001221141 is 1411221004.

It is a happy number.

4001221141 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4001221141 - 2¹ = 4001221139 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 (4001221171) 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 3 ways as a sum of consecutive naturals, for example, 2328141 + ... + 2329858.

It is an arithmetic number, because the mean of its divisors is an integer number (1001470000).

Almost surely, 2^4001221141 is an apocalyptic number.

It is an amenable number.

4001221141 is a deficient number, since it is larger than the sum of its proper divisors (4658859).

4001221141 is an equidigital number, since it uses as much as digits as its factorization.

4001221141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4658858.

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

The square root of 4001221141 is about 63255.2064339371. The cubic root of 4001221141 is about 1587.5625722417.

Adding to 4001221141 its reverse (1411221004), we get a palindrome (5412442145).

The spelling of 4001221141 in words is "four billion, one million, two hundred twenty-one thousand, one hundred forty-one".