21243200014 has 16 divisors (see below), whose sum is σ = 32600836800. Its totient is φ = 10379026944.

The previous prime is 21243199969. The next prime is 21243200023. The reversal of 21243200014 is 41000234212.

It is a junction number, because it is equal to n+sod(n) for n = 21243199964 and 21243200000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677719 + ... + 708370.

It is an arithmetic number, because the mean of its divisors is an integer number (2037552300).

Almost surely, 2^21243200014 is an apocalyptic number.

21243200014 is a deficient number, since it is larger than the sum of its proper divisors (11357636786).

21243200014 is a wasteful number, since it uses less digits than its factorization.

21243200014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386267.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21243200014 its reverse (41000234212), we get a palindrome (62243434226).

The spelling of 21243200014 in words is "twenty-one billion, two hundred forty-three million, two hundred thousand, fourteen".