2212105640 has 32 divisors (see below), whose sum is σ = 4979875680. Its totient is φ = 884373312.

The previous prime is 2212105639. The next prime is 2212105663. The reversal of 2212105640 is 465012122.

It is a happy number.

It is a super-2 number, since 2×2212105640² = 9786822725039619200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67439 + ... + 94721.

It is an arithmetic number, because the mean of its divisors is an integer number (155621115).

Almost surely, 2^2212105640 is an apocalyptic number.

2212105640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212105640 is an abundant number, since it is smaller than the sum of its proper divisors (2767770040).

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

2212105640 is a wasteful number, since it uses less digits than its factorization.

2212105640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29321 (or 29317 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2212105640 is about 47033.0271192489. The cubic root of 2212105640 is about 1302.9726137369.

Adding to 2212105640 its reverse (465012122), we get a palindrome (2677117762).

The spelling of 2212105640 in words is "two billion, two hundred twelve million, one hundred five thousand, six hundred forty".