21212032020303 has 8 divisors (see below), whose sum is σ = 28816345386288. Its totient is φ = 13874536667264.

The previous prime is 21212032020241. The next prime is 21212032020331. The reversal of 21212032020303 is 30302023021212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21212032020303 - 2⁹ = 21212032019791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21212032020303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212032020343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66704503050 + ... + 66704503367.

It is an arithmetic number, because the mean of its divisors is an integer number (3602043173286).

Almost surely, 2^{21212032020303} is an apocalyptic number.

21212032020303 is a deficient number, since it is larger than the sum of its proper divisors (7604313365985).

21212032020303 is a wasteful number, since it uses less digits than its factorization.

21212032020303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133409006473.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21212032020303 its reverse (30302023021212), we get a palindrome (51514055041515).

The spelling of 21212032020303 in words is "twenty-one trillion, two hundred twelve billion, thirty-two million, twenty thousand, three hundred three".