2102211312 has 20 divisors (see below), whose sum is σ = 5430712680. Its totient is φ = 700737088.

The previous prime is 2102211311. The next prime is 2102211323. The reversal of 2102211312 is 2131122012.

It is a super-2 number, since 2×2102211312² = 8838584800601522688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2102211291 and 2102211300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102211311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21897987 + ... + 21898082.

It is an arithmetic number, because the mean of its divisors is an integer number (271535634).

Almost surely, 2^2102211312 is an apocalyptic number.

It is an amenable number.

2102211312 is an abundant number, since it is smaller than the sum of its proper divisors (3328501368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2102211312 is a wasteful number, since it uses less digits than its factorization.

2102211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43796080 (or 43796074 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2102211312 is about 45849.8779932946. The cubic root of 2102211312 is about 1281.0284930355.

Adding to 2102211312 its reverse (2131122012), we get a palindrome (4233333324).

The spelling of 2102211312 in words is "two billion, one hundred two million, two hundred eleven thousand, three hundred twelve".