21224032503848 has 128 divisors (see below), whose sum is σ = 41912910950400. Its totient is φ = 10065070368000.

The previous prime is 21224032503847. The next prime is 21224032503851. The reversal of 21224032503848 is 84830523042212.

It is a junction number, because it is equal to n+sod(n) for n = 21224032503799 and 21224032503808.

It is not an unprimeable number, because it can be changed into a prime (21224032503847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1547949713 + ... + 1547963423.

It is an arithmetic number, because the mean of its divisors is an integer number (327444616800).

Almost surely, 2^{21224032503848} is an apocalyptic number.

It is an amenable number.

21224032503848 is a deficient number, since it is larger than the sum of its proper divisors (20688878446552).

21224032503848 is a wasteful number, since it uses less digits than its factorization.

21224032503848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14551 (or 14547 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 44.

The spelling of 21224032503848 in words is "twenty-one trillion, two hundred twenty-four billion, thirty-two million, five hundred three thousand, eight hundred forty-eight".