21314112242644 has 12 divisors (see below), whose sum is σ = 40168903842004. Its totient is φ = 9837282573504.

The previous prime is 21314112242611. The next prime is 21314112242671. The reversal of 21314112242644 is 44624221141312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14754049210000 + 6560063032644 = 3841100^2 + 2561262^2 .

It is a super-2 number, since 2×21314112242644² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204943386897 + ... + 204943387000.

Almost surely, 2^{21314112242644} is an apocalyptic number.

It is an amenable number.

21314112242644 is a deficient number, since it is larger than the sum of its proper divisors (18854791599360).

21314112242644 is a wasteful number, since it uses less digits than its factorization.

21314112242644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409886773914 (or 409886773912 counting only the distinct ones).

The product of its digits is 73728, while the sum is 37.

Adding to 21314112242644 its reverse (44624221141312), we get a palindrome (65938333383956).

The spelling of 21314112242644 in words is "twenty-one trillion, three hundred fourteen billion, one hundred twelve million, two hundred forty-two thousand, six hundred forty-four".