21446142012 has 48 divisors (see below), whose sum is σ = 55609002400. Its totient is φ = 7147699200.

The previous prime is 21446142007. The next prime is 21446142041. The reversal of 21446142012 is 21024164412.

21446142012 is a `hidden beast` number, since 2 + 1 + 44 + 614 + 2 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1482012 + ... + 1496412.

Almost surely, 2^21446142012 is an apocalyptic number.

It is an amenable number.

21446142012 is an abundant number, since it is smaller than the sum of its proper divisors (34162860388).

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

21446142012 is a wasteful number, since it uses less digits than its factorization.

21446142012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28203 (or 28195 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 21446142012 in words is "twenty-one billion, four hundred forty-six million, one hundred forty-two thousand, twelve".