21002021302293 has 24 divisors (see below), whose sum is σ = 30427432542936. Its totient is φ = 13959267840000.

The previous prime is 21002021302259. The next prime is 21002021302331. The reversal of 21002021302293 is 39220312020012.

21002021302293 is a `hidden beast` number, since 2 + 100 + 202 + 130 + 229 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2185364976804 + 18816656325489 = 1478298^2 + 4337817^2 .

It is not a de Polignac number, because 21002021302293 - 2¹⁷ = 21002021171221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002021301293) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 89359173 + ... + 89593893.

It is an arithmetic number, because the mean of its divisors is an integer number (1267809689289).

Almost surely, 2^{21002021302293} is an apocalyptic number.

It is an amenable number.

21002021302293 is a deficient number, since it is larger than the sum of its proper divisors (9425411240643).

21002021302293 is a wasteful number, since it uses less digits than its factorization.

21002021302293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264565 (or 264562 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 21002021302293 in words is "twenty-one trillion, two billion, twenty-one million, three hundred two thousand, two hundred ninety-three".