1010401721 has 4 divisors (see below), whose sum is σ = 1154744832. Its totient is φ = 866058612.

The previous prime is 1010401669. The next prime is 1010401729. The reversal of 1010401721 is 1271040101.

1010401721 is digitally balanced in base 2, 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 1010401721 - 2⁶ = 1010401657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1010401721.

It is not an unprimeable number, because it can be changed into a prime (1010401729) 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, 72171545 + ... + 72171558.

It is an arithmetic number, because the mean of its divisors is an integer number (288686208).

Almost surely, 2^1010401721 is an apocalyptic number.

It is an amenable number.

1010401721 is a deficient number, since it is larger than the sum of its proper divisors (144343111).

1010401721 is an equidigital number, since it uses as much as digits as its factorization.

1010401721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144343110.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 1010401721 is about 31786.8167799168. The cubic root of 1010401721 is about 1003.4552875702.

Adding to 1010401721 its reverse (1271040101), we get a palindrome (2281441822).

The spelling of 1010401721 in words is "one billion, ten million, four hundred one thousand, seven hundred twenty-one".