21311330010212 has 48 divisors (see below), whose sum is σ = 42496830230400. Its totient is φ = 9262129551360.

The previous prime is 21311330010181. The next prime is 21311330010221. The reversal of 21311330010212 is 21201003311312.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 80944637 + ... + 81207492.

It is an arithmetic number, because the mean of its divisors is an integer number (885350629800).

Almost surely, 2^{21311330010212} is an apocalyptic number.

21311330010212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21311330010212 is a deficient number, since it is larger than the sum of its proper divisors (21185500220188).

21311330010212 is a wasteful number, since it uses less digits than its factorization.

21311330010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162152276 (or 162152274 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21311330010212 its reverse (21201003311312), we get a palindrome (42512333321524).

The spelling of 21311330010212 in words is "twenty-one trillion, three hundred eleven billion, three hundred thirty million, ten thousand, two hundred twelve".