21061035224 has 16 divisors (see below), whose sum is σ = 39717706320. Its totient is φ = 10469646880.

The previous prime is 21061035199. The next prime is 21061035283. The reversal of 21061035224 is 42253016012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21061035193 and 21061035202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7607372 + ... + 7610139.

It is an arithmetic number, because the mean of its divisors is an integer number (2482356645).

Almost surely, 2^21061035224 is an apocalyptic number.

It is an amenable number.

21061035224 is a deficient number, since it is larger than the sum of its proper divisors (18656671096).

21061035224 is a wasteful number, since it uses less digits than its factorization.

21061035224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15217690 (or 15217686 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 21061035224 in words is "twenty-one billion, sixty-one million, thirty-five thousand, two hundred twenty-four".