21414432012 has 24 divisors (see below), whose sum is σ = 50255839536. Its totient is φ = 7096882368.

The previous prime is 21414432001. The next prime is 21414432023. The reversal of 21414432012 is 21023441412.

It is an interprime number because it is at equal distance from previous prime (21414432001) and next prime (21414432023).

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 7 ways as a sum of consecutive naturals, for example, 5155543 + ... + 5159694.

It is an arithmetic number, because the mean of its divisors is an integer number (2093993314).

Almost surely, 2^21414432012 is an apocalyptic number.

It is an amenable number.

21414432012 is an abundant number, since it is smaller than the sum of its proper divisors (28841407524).

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

21414432012 is a wasteful number, since it uses less digits than its factorization.

21414432012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10315417 (or 10315415 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21414432012 its reverse (21023441412), we get a palindrome (42437873424).

The spelling of 21414432012 in words is "twenty-one billion, four hundred fourteen million, four hundred thirty-two thousand, twelve".