21331330212202 has 8 divisors (see below), whose sum is σ = 31997015136612. Its totient is φ = 10665658500000.

The previous prime is 21331330212163. The next prime is 21331330212239. The reversal of 21331330212202 is 20221203313312.

It can be written as a sum of positive squares in 2 ways, for example, as 17977014884761 + 3354315327441 = 4239931^2 + 1831479^2 .

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

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, 3718452 + ... + 7515952.

Almost surely, 2^{21331330212202} is an apocalyptic number.

21331330212202 is a deficient number, since it is larger than the sum of its proper divisors (10665684924410).

21331330212202 is a wasteful number, since it uses less digits than its factorization.

21331330212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606104.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21331330212202 its reverse (20221203313312), we get a palindrome (41552533525514).

The spelling of 21331330212202 in words is "twenty-one trillion, three hundred thirty-one billion, three hundred thirty million, two hundred twelve thousand, two hundred two".