3721101001 has 4 divisors (see below), whose sum is σ = 3811859604. Its totient is φ = 3630342400.

The previous prime is 3721100993. The next prime is 3721101011. The reversal of 3721101001 is 1001011273.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1388307600 + 2332793401 = 37260^2 + 48299^2 .

It is a cyclic number.

It is not a de Polignac number, because 3721101001 - 2³ = 3721100993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3721101011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45379240 + ... + 45379321.

It is an arithmetic number, because the mean of its divisors is an integer number (952964901).

Almost surely, 2^3721101001 is an apocalyptic number.

It is an amenable number.

3721101001 is a deficient number, since it is larger than the sum of its proper divisors (90758603).

3721101001 is an equidigital number, since it uses as much as digits as its factorization.

3721101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90758602.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 3721101001 is about 61000.8278714314. The cubic root of 3721101001 is about 1549.6150276670.

Adding to 3721101001 its reverse (1001011273), we get a palindrome (4722112274).

The spelling of 3721101001 in words is "three billion, seven hundred twenty-one million, one hundred one thousand, one".