21142014020 has 48 divisors (see below), whose sum is σ = 47091844800. Its totient is φ = 7950533760.

The previous prime is 21142014013. The next prime is 21142014037. The reversal of 21142014020 is 2041024112.

It is a self number, because there is not a number n which added to its sum of digits gives 21142014020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162575 + ... + 262134.

It is an arithmetic number, because the mean of its divisors is an integer number (981080100).

Almost surely, 2^21142014020 is an apocalyptic number.

21142014020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21142014020 is an abundant number, since it is smaller than the sum of its proper divisors (25949830780).

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

21142014020 is a wasteful number, since it uses less digits than its factorization.

21142014020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424868 (or 424866 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21142014020 its reverse (2041024112), we get a palindrome (23183038132).

The spelling of 21142014020 in words is "twenty-one billion, one hundred forty-two million, fourteen thousand, twenty".