21130123343104 has 72 divisors (see below), whose sum is σ = 42287782924800. Its totient is φ = 10537516953600.

The previous prime is 21130123343041. The next prime is 21130123343117. The reversal of 21130123343104 is 40134332103112.

It is a super-2 number, since 2×21130123343104² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196142247 + ... + 196249945.

It is an arithmetic number, because the mean of its divisors is an integer number (587330318400).

Almost surely, 2^{21130123343104} is an apocalyptic number.

It is an amenable number.

21130123343104 is an abundant number, since it is smaller than the sum of its proper divisors (21157659581696).

21130123343104 is a wasteful number, since it uses less digits than its factorization.

21130123343104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109707 (or 109693 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 21130123343104 its reverse (40134332103112), we get a palindrome (61264455446216).

The spelling of 21130123343104 in words is "twenty-one trillion, one hundred thirty billion, one hundred twenty-three million, three hundred forty-three thousand, one hundred four".