21314124452 has 12 divisors (see below), whose sum is σ = 37335214896. Its totient is φ = 10646920200.

The previous prime is 21314124451. The next prime is 21314124499. The reversal of 21314124452 is 25442141312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21314124451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2530778 + ... + 2539185.

It is an arithmetic number, because the mean of its divisors is an integer number (3111267908).

Almost surely, 2^21314124452 is an apocalyptic number.

It is an amenable number.

21314124452 is a deficient number, since it is larger than the sum of its proper divisors (16021090444).

21314124452 is a wasteful number, since it uses less digits than its factorization.

21314124452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071018 (or 5071016 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

Adding to 21314124452 its reverse (25442141312), we get a palindrome (46756265764).

The spelling of 21314124452 in words is "twenty-one billion, three hundred fourteen million, one hundred twenty-four thousand, four hundred fifty-two".