21340626124 has 12 divisors (see below), whose sum is σ = 37765715400. Its totient is φ = 10550421728.

The previous prime is 21340626121. The next prime is 21340626161. The reversal of 21340626124 is 42162604312.

It is not an unprimeable number, because it can be changed into a prime (21340626121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29972434 + ... + 29973145.

It is an arithmetic number, because the mean of its divisors is an integer number (3147142950).

Almost surely, 2^21340626124 is an apocalyptic number.

It is an amenable number.

21340626124 is a deficient number, since it is larger than the sum of its proper divisors (16425089276).

21340626124 is a wasteful number, since it uses less digits than its factorization.

21340626124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59945672 (or 59945670 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 21340626124 in words is "twenty-one billion, three hundred forty million, six hundred twenty-six thousand, one hundred twenty-four".