21024410331212 has 12 divisors (see below), whose sum is σ = 36811013826216. Its totient is φ = 10506977809440.

The previous prime is 21024410331209. The next prime is 21024410331229. The reversal of 21024410331212 is 21213301442012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306829993 + ... + 1306846080.

It is an arithmetic number, because the mean of its divisors is an integer number (3067584485518).

Almost surely, 2^{21024410331212} is an apocalyptic number.

It is an amenable number.

21024410331212 is a deficient number, since it is larger than the sum of its proper divisors (15786603495004).

21024410331212 is a wasteful number, since it uses less digits than its factorization.

21024410331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613678088 (or 2613678086 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 21024410331212 its reverse (21213301442012), we get a palindrome (42237711773224).

The spelling of 21024410331212 in words is "twenty-one trillion, twenty-four billion, four hundred ten million, three hundred thirty-one thousand, two hundred twelve".