2101221310 has 8 divisors (see below), whose sum is σ = 3782198376. Its totient is φ = 840488520.

The previous prime is 2101221289. The next prime is 2101221313. The reversal of 2101221310 is 131221012.

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

It is a super-2 number, since 2×2101221310² = 8830261987196232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101221313) 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, 105061056 + ... + 105061075.

It is an arithmetic number, because the mean of its divisors is an integer number (472774797).

Almost surely, 2^2101221310 is an apocalyptic number.

2101221310 is a deficient number, since it is larger than the sum of its proper divisors (1680977066).

2101221310 is a wasteful number, since it uses less digits than its factorization.

2101221310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210122138.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2101221310 is about 45839.0805972371. The cubic root of 2101221310 is about 1280.8273683281.

Adding to 2101221310 its reverse (131221012), we get a palindrome (2232442322).

The spelling of 2101221310 in words is "two billion, one hundred one million, two hundred twenty-one thousand, three hundred ten".