21250226602529 has 16 divisors (see below), whose sum is σ = 22085176041600. Its totient is φ = 20429682706944.

The previous prime is 21250226602519. The next prime is 21250226602547. The reversal of 21250226602529 is 92520662205212.

It is a cyclic number.

It is not a de Polignac number, because 21250226602529 - 2³² = 21245931635233 is a prime.

It is a super-2 number, since 2×21250226602529² (a number of 27 digits) contains 22 as substring.

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 21250226602529.

It is not an unprimeable number, because it can be changed into a prime (21250226602519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2561069 + ... + 7004250.

It is an arithmetic number, because the mean of its divisors is an integer number (1380323502600).

Almost surely, 2^{21250226602529} is an apocalyptic number.

It is an amenable number.

21250226602529 is a deficient number, since it is larger than the sum of its proper divisors (834949439071).

21250226602529 is an equidigital number, since it uses as much as digits as its factorization.

21250226602529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9566072.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 21250226602529 in words is "twenty-one trillion, two hundred fifty billion, two hundred twenty-six million, six hundred two thousand, five hundred twenty-nine".