21010523241 has 8 divisors (see below), whose sum is σ = 28025022784. Its totient is φ = 14001519600.

The previous prime is 21010523173. The next prime is 21010523263. The reversal of 21010523241 is 14232501012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21010523241 - 2¹⁹ = 21009998953 is a prime.

It is a super-2 number, since 2×21010523241² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21010523291) 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, 1365046 + ... + 1380351.

It is an arithmetic number, because the mean of its divisors is an integer number (3503127848).

Almost surely, 2^21010523241 is an apocalyptic number.

It is an amenable number.

21010523241 is a deficient number, since it is larger than the sum of its proper divisors (7014499543).

21010523241 is a wasteful number, since it uses less digits than its factorization.

21010523241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747951.

The product of its (nonzero) digits is 480, while the sum is 21.

The spelling of 21010523241 in words is "twenty-one billion, ten million, five hundred twenty-three thousand, two hundred forty-one".