10821442239 has 16 divisors (see below), whose sum is σ = 16098854400. Its totient is φ = 7184105208.

The previous prime is 10821442213. The next prime is 10821442279. The reversal of 10821442239 is 93224412801.

10821442239 is a `hidden beast` number, since 10 + 8 + 214 + 422 + 3 + 9 = 666.

It is not a de Polignac number, because 10821442239 - 2¹¹ = 10821440191 is a prime.

It is a super-2 number, since 2×10821442239² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10821442279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 832029 + ... + 844934.

It is an arithmetic number, because the mean of its divisors is an integer number (1006178400).

Almost surely, 2^10821442239 is an apocalyptic number.

10821442239 is a deficient number, since it is larger than the sum of its proper divisors (5277412161).

10821442239 is a wasteful number, since it uses less digits than its factorization.

10821442239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677211 (or 1677205 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 10821442239 in words is "ten billion, eight hundred twenty-one million, four hundred forty-two thousand, two hundred thirty-nine".