21020332293 has 48 divisors (see below), whose sum is σ = 32658253056. Its totient is φ = 12994248960.

The previous prime is 21020332273. The next prime is 21020332297. The reversal of 21020332293 is 39223302012.

21020332293 is a `hidden beast` number, since 21 + 0 + 20 + 332 + 293 = 666.

It is not a de Polignac number, because 21020332293 - 2¹⁷ = 21020201221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020332297) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2147296 + ... + 2157062.

It is an arithmetic number, because the mean of its divisors is an integer number (680380272).

Almost surely, 2^21020332293 is an apocalyptic number.

21020332293 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21020332293 is a deficient number, since it is larger than the sum of its proper divisors (11637920763).

21020332293 is a wasteful number, since it uses less digits than its factorization.

21020332293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10114 (or 10111 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

It can be divided in two parts, 2102033 and 2293, that added together give a triangular number (2104326 = T₂₀₅₁).

The spelling of 21020332293 in words is "twenty-one billion, twenty million, three hundred thirty-two thousand, two hundred ninety-three".