21134223303212 has 12 divisors (see below), whose sum is σ = 36989084616120. Its totient is φ = 10565913412896.

The previous prime is 21134223303211. The next prime is 21134223303269. The reversal of 21134223303212 is 21230332243112.

It is not an unprimeable number, because it can be changed into a prime (21134223303211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299519993 + ... + 299590544.

It is an arithmetic number, because the mean of its divisors is an integer number (3082423718010).

Almost surely, 2^{21134223303212} is an apocalyptic number.

It is an amenable number.

21134223303212 is a deficient number, since it is larger than the sum of its proper divisors (15854861312908).

21134223303212 is a wasteful number, since it uses less digits than its factorization.

21134223303212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599119360 (or 599119358 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 21134223303212 its reverse (21230332243112), we get a palindrome (42364555546324).

The spelling of 21134223303212 in words is "twenty-one trillion, one hundred thirty-four billion, two hundred twenty-three million, three hundred three thousand, two hundred twelve".