21134410231212 has 36 divisors (see below), whose sum is σ = 56565627385176. Its totient is φ = 6630403209600.

The previous prime is 21134410231201. The next prime is 21134410231237. The reversal of 21134410231212 is 21213201443112.

21134410231212 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 4 + 410 + 2 + 31 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17266674414 + ... + 17266675637.

It is an arithmetic number, because the mean of its divisors is an integer number (1571267427366).

Almost surely, 2^{21134410231212} is an apocalyptic number.

It is an amenable number.

21134410231212 is an abundant number, since it is smaller than the sum of its proper divisors (35431217153964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21134410231212 is a wasteful number, since it uses less digits than its factorization.

21134410231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34533350078 (or 34533350073 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 21134410231212 its reverse (21213201443112), we get a palindrome (42347611674324).

The spelling of 21134410231212 in words is "twenty-one trillion, one hundred thirty-four billion, four hundred ten million, two hundred thirty-one thousand, two hundred twelve".