21313332010 has 8 divisors (see below), whose sum is σ = 38363997636. Its totient is φ = 8525332800.

The previous prime is 21313331957. The next prime is 21313332013. The reversal of 21313332010 is 1023331312.

It can be written as a sum of positive squares in 2 ways, for example, as 21016010961 + 297321049 = 144969^2 + 17243^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21313332013) 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, 1065666591 + ... + 1065666610.

Almost surely, 2^21313332010 is an apocalyptic number.

21313332010 is a deficient number, since it is larger than the sum of its proper divisors (17050665626).

21313332010 is a wasteful number, since it uses less digits than its factorization.

21313332010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131333208.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21313332010 its reverse (1023331312), we get a palindrome (22336663322).

The spelling of 21313332010 in words is "twenty-one billion, three hundred thirteen million, three hundred thirty-two thousand, ten".