21013233020212 has 48 divisors (see below), whose sum is σ = 37624531835520. Its totient is φ = 10265552911872.

The previous prime is 21013233020209. The next prime is 21013233020243. The reversal of 21013233020212 is 21202033231012.

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 15 ways as a sum of consecutive naturals, for example, 437961568 + ... + 438009544.

It is an arithmetic number, because the mean of its divisors is an integer number (783844413240).

Almost surely, 2^{21013233020212} is an apocalyptic number.

It is an amenable number.

21013233020212 is a deficient number, since it is larger than the sum of its proper divisors (16611298815308).

21013233020212 is a wasteful number, since it uses less digits than its factorization.

21013233020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59320 (or 59318 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21013233020212 its reverse (21202033231012), we get a palindrome (42215266251224).

The spelling of 21013233020212 in words is "twenty-one trillion, thirteen billion, two hundred thirty-three million, twenty thousand, two hundred twelve".