21002034432241 has 16 divisors (see below), whose sum is σ = 21367085886720. Its totient is φ = 20639873422080.

The previous prime is 21002034432221. The next prime is 21002034432271. The reversal of 21002034432241 is 14223443020012.

It is a cyclic number.

It is not a de Polignac number, because 21002034432241 - 2¹⁷ = 21002034301169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002034432221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185537701 + ... + 185650861.

It is an arithmetic number, because the mean of its divisors is an integer number (1335442867920).

Almost surely, 2^{21002034432241} is an apocalyptic number.

It is an amenable number.

21002034432241 is a deficient number, since it is larger than the sum of its proper divisors (365051454479).

21002034432241 is a wasteful number, since it uses less digits than its factorization.

21002034432241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125904.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21002034432241 its reverse (14223443020012), we get a palindrome (35225477452253).

The spelling of 21002034432241 in words is "twenty-one trillion, two billion, thirty-four million, four hundred thirty-two thousand, two hundred forty-one".