21158110341 has 24 divisors (see below), whose sum is σ = 31164097536. Its totient is φ = 13830098400.

The previous prime is 21158110333. The next prime is 21158110361. The reversal of 21158110341 is 14301185112.

It is not a de Polignac number, because 21158110341 - 2³ = 21158110333 is a prime.

It is a super-2 number, since 2×21158110341² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21158110361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19365 + ... + 206618.

It is an arithmetic number, because the mean of its divisors is an integer number (1298504064).

Almost surely, 2^21158110341 is an apocalyptic number.

It is an amenable number.

21158110341 is a deficient number, since it is larger than the sum of its proper divisors (10005987195).

21158110341 is a wasteful number, since it uses less digits than its factorization.

21158110341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226193 (or 226190 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

Adding to 21158110341 its reverse (14301185112), we get a palindrome (35459295453).

The spelling of 21158110341 in words is "twenty-one billion, one hundred fifty-eight million, one hundred ten thousand, three hundred forty-one".