21000100014 has 40 divisors (see below), whose sum is σ = 47109753768. Its totient is φ = 6992004240.

The previous prime is 21000100003. The next prime is 21000100031. The reversal of 21000100014 is 41000100012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 21000099969 and 21000100005.

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 19 ways as a sum of consecutive naturals, for example, 68169 + ... + 215979.

Almost surely, 2^21000100014 is an apocalyptic number.

21000100014 is an abundant number, since it is smaller than the sum of its proper divisors (26109653754).

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

21000100014 is a wasteful number, since it uses less digits than its factorization.

21000100014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148702 (or 148693 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 21000100014 its reverse (41000100012), we get a palindrome (62000200026).

The spelling of 21000100014 in words is "twenty-one billion, one hundred thousand, fourteen".