21037526228 has 12 divisors (see below), whose sum is σ = 37671849600. Its totient is φ = 10274140632.

The previous prime is 21037526203. The next prime is 21037526317. The reversal of 21037526228 is 82262573012.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 21037526191 and 21037526200.

It is a congruent number.

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, 61155428 + ... + 61155771.

It is an arithmetic number, because the mean of its divisors is an integer number (3139320800).

Almost surely, 2^21037526228 is an apocalyptic number.

It is an amenable number.

21037526228 is a deficient number, since it is larger than the sum of its proper divisors (16634323372).

21037526228 is a wasteful number, since it uses less digits than its factorization.

21037526228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122311246 (or 122311244 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 21037526228 in words is "twenty-one billion, thirty-seven million, five hundred twenty-six thousand, two hundred twenty-eight".