21302121020302 has 8 divisors (see below), whose sum is σ = 32197098947112. Its totient is φ = 10569754704600.

The previous prime is 21302121020281. The next prime is 21302121020311. The reversal of 21302121020302 is 20302012120312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21302121020302.

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, 40652902449 + ... + 40652902972.

It is an arithmetic number, because the mean of its divisors is an integer number (4024637368389).

Almost surely, 2^{21302121020302} is an apocalyptic number.

21302121020302 is a deficient number, since it is larger than the sum of its proper divisors (10894977926810).

21302121020302 is a wasteful number, since it uses less digits than its factorization.

21302121020302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81305805554.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21302121020302 its reverse (20302012120312), we get a palindrome (41604133140614).

The spelling of 21302121020302 in words is "twenty-one trillion, three hundred two billion, one hundred twenty-one million, twenty thousand, three hundred two".