21002350341 has 64 divisors (see below), whose sum is σ = 35404812288. Its totient is φ = 10790427648.

The previous prime is 21002350331. The next prime is 21002350349. The reversal of 21002350341 is 14305320012.

It is not a de Polignac number, because 21002350341 - 2⁶ = 21002350277 is a prime.

It is a super-2 number, since 2×21002350341² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002350349) 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 63 ways as a sum of consecutive naturals, for example, 10484446 + ... + 10486448.

It is an arithmetic number, because the mean of its divisors is an integer number (553200192).

Almost surely, 2^21002350341 is an apocalyptic number.

21002350341 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21002350341 is a deficient number, since it is larger than the sum of its proper divisors (14402461947).

21002350341 is a wasteful number, since it uses less digits than its factorization.

21002350341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 21002350341 its reverse (14305320012), we get a palindrome (35307670353).

The spelling of 21002350341 in words is "twenty-one billion, two million, three hundred fifty thousand, three hundred forty-one".