10511525221 has 8 divisors (see below), whose sum is σ = 11286609984. Its totient is φ = 9753858240.

The previous prime is 10511525197. The next prime is 10511525237. The reversal of 10511525221 is 12252511501.

It is a happy number.

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 10511525221 - 2¹⁹ = 10511000933 is a prime.

It is a super-2 number, since 2×10511525221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10511525261) 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, 4353195 + ... + 4355608.

It is an arithmetic number, because the mean of its divisors is an integer number (1410826248).

Almost surely, 2^10511525221 is an apocalyptic number.

It is an amenable number.

10511525221 is a deficient number, since it is larger than the sum of its proper divisors (775084763).

10511525221 is an equidigital number, since it uses as much as digits as its factorization.

10511525221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8708891.

The product of its (nonzero) digits is 1000, while the sum is 25.

The spelling of 10511525221 in words is "ten billion, five hundred eleven million, five hundred twenty-five thousand, two hundred twenty-one".