2141601721 has 8 divisors (see below), whose sum is σ = 2452357440. Its totient is φ = 1832049168.

The previous prime is 2141601719. The next prime is 2141601727. The reversal of 2141601721 is 1271061412.

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 2141601721 - 2¹ = 2141601719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2141601727) 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, 296971 + ... + 304096.

It is an arithmetic number, because the mean of its divisors is an integer number (306544680).

Almost surely, 2^2141601721 is an apocalyptic number.

It is an amenable number.

2141601721 is a deficient number, since it is larger than the sum of its proper divisors (310755719).

2141601721 is an equidigital number, since it uses as much as digits as its factorization.

2141601721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601583.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 2141601721 is about 46277.4428960806. The cubic root of 2141601721 is about 1288.9801688692.

The spelling of 2141601721 in words is "two billion, one hundred forty-one million, six hundred one thousand, seven hundred twenty-one".