21010322 has 8 divisors (see below), whose sum is σ = 31539900. Its totient is φ = 10497024.

The previous prime is 21010321. The next prime is 21010337. The reversal of 21010322 is 22301012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20894041 + 116281 = 4571^2 + 341^2 .

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 (21010321) 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, 47 + ... + 6482.

Almost surely, 2^21010322 is an apocalyptic number.

21010322 is a deficient number, since it is larger than the sum of its proper divisors (10529578).

21010322 is a wasteful number, since it uses less digits than its factorization.

21010322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8140.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 21010322 is about 4583.7017791301. The cubic root of 21010322 is about 275.9376127981.

Adding to 21010322 its reverse (22301012), we get a palindrome (43311334).

The spelling of 21010322 in words is "twenty-one million, ten thousand, three hundred twenty-two".