21112140103140 has 24 divisors (see below), whose sum is σ = 59113992288960. Its totient is φ = 5629904027488.

The previous prime is 21112140103139. The next prime is 21112140103189. The reversal of 21112140103140 is 4130104121112.

It is a super-4 number, since 4×21112140103140⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 175934500800 + ... + 175934500919.

It is an arithmetic number, because the mean of its divisors is an integer number (2463083012040).

Almost surely, 2^{21112140103140} is an apocalyptic number.

21112140103140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112140103140 is an abundant number, since it is smaller than the sum of its proper divisors (38001852185820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21112140103140 is a wasteful number, since it uses less digits than its factorization.

21112140103140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351869001731 (or 351869001729 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 21112140103140 its reverse (4130104121112), we get a palindrome (25242244224252).

The spelling of 21112140103140 in words is "twenty-one trillion, one hundred twelve billion, one hundred forty million, one hundred three thousand, one hundred forty".