21014302244 has 24 divisors (see below), whose sum is σ = 39608918328. Its totient is φ = 9697674240.

The previous prime is 21014302207. The next prime is 21014302247. The reversal of 21014302244 is 44220341012.

It can be written as a sum of positive squares in 4 ways, for example, as 202777600 + 20811524644 = 14240^2 + 144262^2 .

It is not an unprimeable number, because it can be changed into a prime (21014302247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482324 + ... + 524084.

It is an arithmetic number, because the mean of its divisors is an integer number (1650371597).

Almost surely, 2^21014302244 is an apocalyptic number.

It is an amenable number.

21014302244 is a deficient number, since it is larger than the sum of its proper divisors (18594616084).

21014302244 is a wasteful number, since it uses less digits than its factorization.

21014302244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51455 (or 51453 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21014302244 its reverse (44220341012), we get a palindrome (65234643256).

The spelling of 21014302244 in words is "twenty-one billion, fourteen million, three hundred two thousand, two hundred forty-four".