10211110721 has 8 divisors (see below), whose sum is σ = 11954471424. Its totient is φ = 8538907680.

The previous prime is 10211110699. The next prime is 10211110727. The reversal of 10211110721 is 12701111201.

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 10211110721 - 2¹⁴ = 10211094337 is a prime.

It is a super-2 number, since 2×10211110721² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10211110721.

It is not an unprimeable number, because it can be changed into a prime (10211110727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17789105 + ... + 17789678.

It is an arithmetic number, because the mean of its divisors is an integer number (1494308928).

Almost surely, 2^10211110721 is an apocalyptic number.

It is an amenable number.

10211110721 is a deficient number, since it is larger than the sum of its proper divisors (1743360703).

10211110721 is an equidigital number, since it uses as much as digits as its factorization.

10211110721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35578831.

The product of its (nonzero) digits is 28, while the sum is 17.

Adding to 10211110721 its reverse (12701111201), we get a palindrome (22912221922).

The spelling of 10211110721 in words is "ten billion, two hundred eleven million, one hundred ten thousand, seven hundred twenty-one".