21212010302 has 8 divisors (see below), whose sum is σ = 36363446256. Its totient is φ = 9090861552.

The previous prime is 21212010289. The next prime is 21212010311. The reversal of 21212010302 is 20301021212.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 1515143593 = 21212010302 / (2 + 1 + 2 + 1 + 2 + 0 + 1 + 0 + 3 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 757571783 + ... + 757571810.

It is an arithmetic number, because the mean of its divisors is an integer number (4545430782).

Almost surely, 2^21212010302 is an apocalyptic number.

21212010302 is a deficient number, since it is larger than the sum of its proper divisors (15151435954).

21212010302 is a wasteful number, since it uses less digits than its factorization.

21212010302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515143602.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21212010302 its reverse (20301021212), we get a palindrome (41513031514).

The spelling of 21212010302 in words is "twenty-one billion, two hundred twelve million, ten thousand, three hundred two".