21124514002412 has 12 divisors (see below), whose sum is σ = 37967031923520. Its totient is φ = 10276790595696.

The previous prime is 21124514002373. The next prime is 21124514002421. The reversal of 21124514002412 is 21420041542112.

It is a super-4 number, since 4×21124514002412⁴ (a number of 54 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71366601212 + ... + 71366601507.

It is an arithmetic number, because the mean of its divisors is an integer number (3163919326960).

Almost surely, 2^{21124514002412} is an apocalyptic number.

It is an amenable number.

21124514002412 is a deficient number, since it is larger than the sum of its proper divisors (16842517921108).

21124514002412 is a wasteful number, since it uses less digits than its factorization.

21124514002412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142733202760 (or 142733202758 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

Adding to 21124514002412 its reverse (21420041542112), we get a palindrome (42544555544524).

The spelling of 21124514002412 in words is "twenty-one trillion, one hundred twenty-four billion, five hundred fourteen million, two thousand, four hundred twelve".