21133238283 has 36 divisors (see below), whose sum is σ = 31736124840. Its totient is φ = 13898973600.

The previous prime is 21133238239. The next prime is 21133238297. The reversal of 21133238283 is 38283233112.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

21133238283 is a `hidden beast` number, since 2 + 11 + 332 + 38 + 283 = 666.

It is not a de Polignac number, because 21133238283 - 2²² = 21129043979 is a prime.

It is a super-2 number, since 2×21133238283² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21133238783) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 76293141 + ... + 76293417.

Almost surely, 2^21133238283 is an apocalyptic number.

21133238283 is a deficient number, since it is larger than the sum of its proper divisors (10602886557).

21133238283 is an frugal number, since it uses more digits than its factorization.

21133238283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 381 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The spelling of 21133238283 in words is "twenty-one billion, one hundred thirty-three million, two hundred thirty-eight thousand, two hundred eighty-three".